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1.
Инвентарный номер: нет.
   
   V 18

    Valeeva, A. A.
    Structural vacancies in a cubic titanium monoxide [] / A. A. Valeeva, A. A. Rempel, A. I. Gusev // Physics and chemistry of novel materials: 4th Bilateral Russian-German Symposium (Febr. 24-March 1, 1999): Progr. and abstr. - 1999. - С. 2.34
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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
TiO -- МОНООКСИД ТИТАНА -- ВАКАНСИИ СТРУКТУРНЫЕ -- СТРУКТУРНЫЕ ВАКАНСИИ -- ТИТАН -- НЕСТЕХИОМЕТРИЯ -- РАСЧЕТЫ МАТЕМАТИЧЕСКИЕ -- МАТЕМАТИЧЕСКИЕ РАСЧЕТЫ -- Ti

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2.
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   V 18

    Valeeva, A. A.
    Cluster probabilities in ordered titanium monoxide TiOy as functions of the long-range order parameters [Текст] / A. A. Valeeva, A. A. Rempel // JETP Letters. - 2008. - Vol. 88, № 3. - С. 172-177. - Библиогр. : с. 177 (11 назв.)
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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The thermodynamic method is being developed for calculating the titanium-oxygen phase diagram in the domain of existence of the nonstoichiometric titanium monoxide TiOy with vacancies in the metallic and nonmetallic sublattices. To develop the adequate thermodynamic model, the ordering in TiOy was studied in detail by the x-ray diffraction method. The study showed that the low-temperature state of titanium monoxide is characterized by a nearly ideal atomic ordering in both metallic and oxygen sublattices. The structural analysis of the ordered Ti5O5 phase (space group C2/m) in titanium monoxide showed that one should use the multicluster approximation in modeling the free energy of the nonstoichiometric monoxide.

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3.
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   O-69

   
    Ordering of vacancies in vanadium monoxide of under-stoichiometric composition [Текст] / D. A. Davydov, S. Z. Nazarova, A. A. Valeeva, A. A. Rempel` // Izvestiya Rossiiskoi Akademii Nauk, Seriya Fizicheskaya. - 2007. - Vol. 71, № 5. - С. 701-704
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Рубрики: ХИМИЧЕСКИЕ НАУКИ

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4.
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   V 11

   
    Vacancies on the Ti sublattice in titanium monoxide TiOy studied using positron annihilation techniques [Текст] / A. A. Valeeva, A. A. Rempel, W. Sprengel, H. -E. Schaefer // Physical Review B: Condensed Matter and Materials Physics. - 2007. - Vol. 75, № 9. - С. 094107/1-094107/6. - Библиогр. : с. 094107/6 (39 назв.)
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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОНООКСИД ТИТАНА -- АННИГИЛЯЦИЯ ЭЛЕКТРОННО-ПОЗИТРОННАЯ
Аннотация: The local atomic environment of lattice vacancies in titanium monoxide has been specifically studied by positron annihilation techniques in the composition range from TiO0.74 to TiO1.26. For nonstoichiometric titanium monoxide, a high concentration of vacancies has been suggested on both the titanium and the oxygen sublattice. From the analysis of the core electron momentum distribution of the atoms surrounding the vacancies in disordered as well as in ordered titanium monoxide, oxygen atoms are identified to form the local vacancy environment, indicating that positrons are trapped by titanium and not by oxygen vacancies. Positron lifetime measurements have shown that the decrease of the oxygen content, y, and the process of disordering in nonstoichiometric titanium monoxide TiOy, are accompanied by an increase of the valence electron density on the titanium vacancy

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5.
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   V 18

    Valeeva, A. A.
    Twinning and short-range order in ordered titanium monoxide [Текст] / A. A. Valeeva, A. I. Gusev // Physics of the Solid State. - 2006. - Vol. 48, № 9. - С. 1689-1697
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Рубрики: ХИМИЧЕСКИЕ НАУКИ

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6.
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   E 27

   
    Effect of severe plastic deformation on the structure of polycrystalline titanium monoxide [Текст] / A. A. Valeeva, B. A. Gizhevskii, V. P. Pilyugin, A. A. Rempel // Fizika Metallov i Metallovedenie. - 2005. - Vol. 99, № 1. - С. 62-68
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Рубрики: ХИМИЧЕСКИЕ НАУКИ

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7.
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   V 18

    Valeeva, A. A.
    Short-Range Order and Twins in Ordered Titanium Monoxide [Текст] / A. A. Valeeva, A. I. Gusev // JETP Letters (Translation of Pis'ma v Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki). - 2004. - Vol. 79, № 10. - С. 468-472. - Библиогр. : с. 472 (24 назв.)
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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОНООКСИД ТИТАНА -- ЭЛЕКТРОННОЕ СТРОЕНИЕ
Аннотация: The structure of annealed titanium monoxide TiO1.087 containing monoclinic ordered phase Ti5O5 was studied by electron diffraction. Along with the set of structural, superstructural, and extra reflections, the diffraction pattern of titanium monoxide shows a set of plane diffuse fringes in the section of the reciprocal lattice of the basis cubic structure B1. It is shown that some of the extra reflections are due to the twinning of the monoclinic superstructure along the (–1–11) plane of the reciprocal lattice of the basis cubic structure. The diffuse contours enclose plane areas of the reciprocal space with the fixed values of wave vectors K100 ~ ±(h +0.07)k100, K010 ~±(k + 0.07)k010, and K001 ~±(l + 0.07)k001 of the B1 structure. Their appearance is associated with the short-range displacement order

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8.
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   C 74

   
    Concentration Phase Transition near the StoichiometricComposition of Vanadium Monoxide VO1.00 / D. A. Davydov, S. Z. Nazarova, A. A. Valeeva, A. A. Rempel // Bulletin of the Russian Academy of Sciences: Physics. - 2008. - Vol. 72, № 8. - P.1090-1093 : il. - Bibliogr. : p. 1093 (16 ref.)
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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ФАЗОВЫЙ ПЕРЕХОД -- СТЕХИОМЕТРИЯ -- МОНООКСИД ВАНАДИЯ
Аннотация: The concentration dependences of the magnetic susceptibility and lattice parameter of cubic vanadium monoxide have been measured in the composition range from VO0.81 to VO1.07. Near the stoichiometric composition VO1.00, the concentration dependences exhibit a stepwise increase in the specific magnetic susceptibility??(by approximately 0.7 X 10(-6) cm(3)/g) and lattice constant (by about 0.002 nm). These effects can be??related to the concentration phase transition, which occurs in vanadium monoxide with a change from a substoichiometric composition to superstoichiometric. At such a transition, along with a decrease in the concentration of oxygen vacancies, tetrahedrally coordinated vanadium interstitials are formed, as a result of which the??B1 structure changes to a more complex cubic phase structure with the same space group??Fm-3m

\\\\Expert2\\nbo\\Bulletin of the Russian Academy of Sciences Physics\\2008, V. 72, N 8, P. 1090-1093.pdf
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9.
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   O-69

   
    Ordering of Structural Vacancies in Vanadium Monoxide of Substoichiometric Composition / D. A. Davydov, S. Z. Nazarova, A. A. Valeeva, A. A. Rempel // Bulletin of the Russian Academy of Sciences: Physics. - 2007. - Vol. 71, № 5. - P. 677-680 : il. - Bibliogr. : p. 680 (10 ref.)
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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СТРУКТУРНЫЕ ВАКАНСИИ -- МОНООКСИД ВАНАДИЯ -- СТЕХИОМЕТРИЯ
Аннотация: The order–disorder phase transition in vanadium monoxide of substoichiometric compositions VO y has been studied for the first time in situ by the Faraday method with a pendulum magnetic balance of the Domenically type. A minimum is found on the temperature dependence of the magnetic susceptibility of vanadium monoxide of different compositions at a temperature of about 700 K. X-ray diffraction analysis performed before and after measuring the magnetic susceptibility confirmed the change in the structure of vanadium monoxide and the possibility of atom–vacancy processes upon cooling and heating of the samples

\\\\Expert2\\nbo\\Bulletin of the Russian Academy of Sciences Physics\\2007, V. 71, N 5, P. 677-680.pdf
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10.
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   V 18

    Valeeva, A. A.
    Electrokinetic and Magnetic Properties of Cubic Titanium Monoxide with a Double-Defect Structure / A. A. Valeeva, A. A. Rempel, A. I. Gusev // Doklady Physics. - vol. 47, № 1. - P. 39-43 : ил. - Bibliogr. : p. 43 (15 ref.)
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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СВОЙСТВА ЭЛЕКТРОКИНЕТИЧЕСКИЕ -- СВОЙСТВА МАГНИТНЫЕ -- МОНООКСИД ТИТАНА -- ПРОВОДИМОСТЬ

\\\\Expert2\\nbo\\Doklady Physics\\2002, V.47, N 1, p. 39-43.pdf
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11.
Инвентарный номер: нет.
   
   V 18

    Valeeva, A. A.
    Ordering of Cubic Titanium Monoxide into Monoclinic Ti5O5 / A. A. Valeeva, A. A. Rempel, A. I. Gusev // Inorganic Materials. - 2001. - Vol. 37, № 6. - P. 603-612 : il. - Bibliogr. : p. 611-612 (30 ref.)
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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОНООКСИД ТИТАНА -- НЕСТЕХИОМЕТРИЯ
Аннотация: The structures of ordered and disordered cubic TixOz= TiOy (y = z/x) phases containing both Ti and O vacancies were studied by x-ray diffraction. The results demonstrate that annealing TiOy with y = 0.9–1.1 below 1300 K leads to the formation of a monoclinic ordered Ti5O5 phase (sp. gr. C2/m (A12m/1)). Symmetry analysis of the monoclinic Ti5O5 superstructure indicates that the TiOy–Ti5O5 ordering transition is defined by the {k10} Lifshits and {k4} and {k1} non-Lifshits wavevector manifolds. The ordering is shown to be a firstorder transition accompanied by a decrease in the unit-cell volume of the parent lattice. The Ti and O distribution functions in titanium monoxide are calculated, and the Ti- and O-site near-neighbor environments in the monoclinic Ti5O5 superstructure are identified. The region of possible long-range-order parameters is outlined

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12.
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   M 65

   
    Microstructure and Microhardness of Vanadium Oxides in the Range VO0.57-VO1.29 / A. A. Valeeva, D. A. Davydov, S. V. Rempel, A. A. Rempel // Inorganic Materials. - 2009. - Vol. 45, № 8. - P. 905-909 : il. - Bibliogr. : p. 909 (16 ref.)
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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МИКРОСТРУКТУРА -- МИКРОТВЕРДОСТЬ -- ОКСИД ВАНАДИЯ
Аннотация: X-ray diffraction and optical microscopy data are presented which demonstrate that substoichiometric vanadium oxide (VO0.57–VO0.97) consists of a cubic phase with the B1 structure (sp. gr.Fm m) and an ordered monoclinic phase of composition V14O6(sp. gr.C2/m). The content of the latter phase decreases with increasing oxygen content. The superstoichiometric vanadium oxide VO1.29 is shown to contain trace amounts of V52O64. Vickers microhardness data for nonstoichiometric vanadium oxides in the range VO0.57–VO1.29 show that, with increasing oxygen content, their HV has a tendency to decrease, from 18 to 12 GPa. Their microhardness is shown for the first time to have a maximum near the stoichiometric composition VO1.00

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13.
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   V 18

    Valeeva, A. A.
    Two-Sublattice Ordering in Titanium Monoxide / A. A. Valeeva, A. A. Rempel, A. I. Gusev // JETP Letters. - 2000. - Vol. 71, № 11. - P. 460–464 : il. - Bibliogr. : p. 464 (15 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОНООКСИД ТИТАНА -- НЕСТЕХИОМЕТРИЯ
Аннотация: The disordered and ordered structures of nonstoichiometric titanium monoxide TixOz=~TiOy (y = z/x) containing structural vacancies simultaneously in the nonmetallic and metallic sublattices were studied. In the stoichiometry range from TiO0.9 to TiO1.1, an ordered monoclinic phase [space group C2/m (A12m/1)] of the Ti5O5 type is formed in the TiOy monoxide at temperatures below 1300 K. The disorder–order TiOy–Ti5O5 phase-transition channel involves Lifshitz {k10} and non-Lifshitz {k4} and {k11} star rays. The ordering proceeds as a first-order phase transition with a decrease in the volume of the basal cubic lattice. The titanium and oxygen distribution functions in the metallic and nonmetallic sublattices of titanium monoxide are calculated. The domain of allowed values is determined for the long-range order parameter

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14.
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   V 18

    Valeeva, A. A.
    Electrical Conductivity and Magnetic Susceptibility of Titanium Monoxide / A. A. Valeeva, A. A. Rempel, A. I. Gusev // JETP Letters. - 2001. - Vol. 73, № 11. - P. 621-625 : il. - Bibliogr. : p. 625 (24 ref.)
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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СВЕРХПРОВОДИМОСТЬ -- СВОЙСТВА МАГНИТНЫЕ -- МОНООКСИД ТИТАНА
Аннотация: Conductivity and magnetic susceptibility of disordered cubic titanium monoxide TiOy (0.920<= y <= 1.262) are studied. Temperature dependences of the conductivity of TiOy monoxides with y <= 1.069 are described by the Bloch–Grüneisen function with Debye temperature 400–480 K, and temperature dependences of the susceptibility include Pauli paramagnetism of conduction electrons. The behavior of conductivity and susceptibility of TiOy with y>= 1.087 is typical of semiconductors with nondegenerate charge carriers obeying Boltzmann statistics. The band gap DeltaE between the valence and conduction bands of TiOy (y>= 1.087) is 0.06–0.17 eV, and effective mass of charge carriers is equal to 7–14 electron masses

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15.
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   O-17

   
    Observation of Structural Vacancies / A. A. Valeeva, G. Tang, A. I. Gusev, A. A. Rempel // JETP Letters. - 2003. - Vol. 77, № 1. - P. 25-29 : il. - Bibliogr. : p. 29 (14 ref.)
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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СТРУКТУРА КРИСТАЛЛИЧЕСКАЯ -- МОНООКСИД ТИТАНА -- НЕСТЕХИОМЕТРИЯ
Аннотация: A method using the atom–vacancy ordering phenomenon for the visualization of structural vacancies in crystals was suggested and implemented. The ordered nonstoichiometric titanium monoxide Ti5O5 was taken as the object of investigation, because the structural vacancies in this compound can be observed due to the formation of continuous vacancy channels in certain crystallographic directions. The structural vacancies in the specially oriented sample of ordered titanium monoxide were directly observed by high-resolution transmission electron microscopy with a magnification of 4x10(6)

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16.
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   R 42

    Rempel, A. A.
    Identification of Structural Vacancies in Carbides, Oxides, and Sulfides by Doppler Broadening of the Gamma-Ray Line / A. A. Rempel, A. A. Valeeva, N. S. Kozhevnikova // JETP Letters. - 2010. - Vol. 92, № 3. - P146-150 : il. - Bibliogr. : p. 150 (9 ref.)
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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СТРУКТУРНЫЕ ВАКАНСИИ -- КАРБИДЫ -- ОКСИДЫ -- СУЛЬФИДЫ
Аннотация: A method has been developed to identify the sublattices of a crystal structure in which there are atomic vacancies. This method is based on determining the chemical environment of vacancies and is implemented using the method of the positron annihilation by measuring the momentum distribution of core electrons. To determine the characteristic momentum distribution of electrons, a special two-detector spectroscopy is used, which ensures measurements of Doppler broadening of the annihilation gamma ray line with a high (up to 106) signal-to-noise ratio. To test the method, vacancies in irradiated silicon carbide (6H SiC), sintered nonstoichiometric titanium carbides (TiCy) and titanium monoxides (TiOy), and chemically deposited lead and cadmium sulfides (PbS and CdS) have been identified. Vacancies in the carbon and silicon sublattices have been identified in silicon carbide after irradiation by low- and high-energy electrons, respectively. Vacancies in the nonmetal sublattice have been identified in TiCy. Vacancies in the metal sublattice have been identifiedin TiCy, as well as in PbS and CdS

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17.
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   K 76

    Kostenko, M. G.
    Relationship between Short- and Long-Range Orders in Nonstoichiometric Titanium Monoxide (TiOy) / M. G. Kostenko, A. A. Valeeva, A. A. Rempel // Journal of Experimental and Theoretical Physics. - 2010. - Vol. 111, № 5. - P786-795 : il. - Bibliogr. : p. 794 (9 ref.)
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Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
НЕСТЕХИОМЕТРИЯ -- МОНООКСИД ТИТАНА
Аннотация: The relationship between the short and long range orders in various phases of nonstoichiometric titanium monoxide (TiOy) has been analyzed for the first time. The types of the local environment of lattice sites in the metal and nonmetal (oxygen) sublattices of Ti5O5, Ti3O2, Ti2O3, and Ti4O5 superstructures are described. It is established that, in phases where ordering takes place simultaneously in both sublattices, all parameters of the superstructural short range order determining the positions of atoms and vacancies in the first three coordination spheres can be uniquely expressed via the long range order parameters. If the ordering takes place only in one sublattice, then five of the six short range order parameters vanish. It is shown that, using data on the maximum absolute values of six short range order parameters and on the fractions of occupied atomic positions in titanium and oxygen sublattices, it is possible to predict the type of ordered phase expected to form in the nonstoichiometric titanium monoxide TiOy

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18.
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   V 18

    Valeeva, A. A.
    Structure and specific heat of disordered and ordered titanium monoxide TiOy / A. A. Valeeva, A. A. Rempel, A. I. Gusev // Journal of Structural Chemistry. - 2003. - Vol. 44, № 2. - P235-242 : il. - Bibliogr. : p. 241-242 (14 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОНООКСИД ТИТАНА -- НЕСТЕХИОМЕТРИЯ -- РЕНТГЕНОВСКАЯ ДИФРАКЦИЯ
Аннотация: The structure of disordered and ordered titanium monoxide containing structural vacancies in both sublattices was studied by X-ray di raction. The symmetry of the monoclinic Ti5O5 superstructure (space group C2=m) was analyzed. The type and channel of the TiOy-Ti5O5 disorder-order transition was determined. The distribution functions of Ti and O atoms in the metal and nonmetal sublattices of titanium monoxide were calculated. The specific heats of TiOy titanium monoxides (0:8 < y < 1:27) were measured by dfferential scanning calorimetry for the disordered and ordered states in the range from 340 to 600 K. The dependences of the specific heat, enthalpy, and entropy on the composition and structure of TiOy were found for the first time. A notable effect of the structural state on the specific heat was detected. In the indicated temperature range, the Cp(T) dependence is adequately described by a function that accounts for the Debye effect and the electronic specific heat. Key words: titanium monoxide, nonstoichiometry, disorder-order phase transition, Ti5O5 superstructure, vacancy channels, X-ray diffraction, differential scanning calorimetry, specific heat

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19.
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   O-17

   
    Observation of Structural Vacancies in Titanium Monoxide Using Transmission Electron Microscopy / A. A. Valeeva, G. Tang, A. I. Gusev, A. A. Rempel // Physics of the Solid State. - 2003. - Vol. 45, № 1. - P87-93 : il. - Bibliogr. : p. 93 (17 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОНООКСИД ТИТАНА -- ЭЛЕКТРОННАЯ МИКРОСКОПИЯ -- НЕСТЕХИОМЕТРИЯ
Аннотация: Structural vacancies were directly observed in nonstoichiometric ordered titanium monoxide using high-resolution transmission electron microscopy under a magnification of 4x 106. The observation of structural vacancies became possible due to their ordering and the formation of continuous vacancy channels in certain crystallographic directions. Microdiffraction was employed to orient the sample in the direction permitting the observation of vacancy channels. Transmission electron microscopy providing a magnification of tens of thousands of times revealed that titanium monoxide grains do not contain cracks and macropores and confirmed that the free volume detected picnometrically in the titanium monoxide is concentrated in structural vacancies on the titanium and oxygen sublattices

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20.
Инвентарный номер: нет.
   
   G 96

    Gusev, A. I.
    The Influence of Imperfection of the Crystal Lattice on the Electrokinetic and Magnetic Properties of Disordered Titanium Monoxide / A. I. Gusev, A. A. Valeeva // Physics of the Solid State. - 2003. - Vol. 45, № 7. - P1242-1250 : il. - Bibliogr. : p. 1249-1250 (36 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОНООКСИД ТИТАНА -- МАГНИТНЫЕ СВОЙСТВА -- ЭЛЕКТРОКИНЕТИКА
Аннотация: The conductivity and magnetic susceptibility of disordered titanium monoxide TiOy (0.920<= y<=,1.262) containing vacancies in titanium and oxygen sublattices are investigated. For TiOy monoxides with an oxygen content y<=1.069, the temperature dependences of the conductivity are described by the Bloch–Gruneisen function at a Debye temperature ranging from 400 to 480 K and the temperature dependences of the magnetic susceptibility are characterized by the contribution from the Pauli paramagnetism due to conduction electrons. The behavior of the conductivity and magnetic susceptibility of TiOy monoxides with an oxygen content<=y<= 1.087 is characteristic of narrow-gap semiconductors with nondegenerate charge carriers governed by the Boltzmann statistics. The band gap deltaE between the valence and conduction bands of TiOy monoxides with<=y<= 1.087 falls in the range 0.06–0.17 eV

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21.
Инвентарный номер: нет.
   
   I-70

   
    Investigation of Structural Vacancies in Titanium Monoxide by Electron-Positron Annihilation / A. A. Valeeva, A. A. Rempel, W. Sprengel, H. -E. Schaefer // Physics of the Solid State. - 2009. - Vol. 51, № 5. - P924-929 : il. - Bibliogr. : p. 928-929 (30 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОНООКСИД ТИТАНА -- АННИГИЛЯЦИЯ ЭЛЕКТРОННО-ПОЗИТРОННАЯ -- НЕСТЕХИОМЕТРИЯ
Аннотация: Local atomic environment of vacancies in nonstoichiometric titanium monoxide ranging in composition from TiO0.74 to TiO1.26 was studied by electron–positron annihilation. Analysis of the Doppler broadening spectra of the annihilation gamma line for titanium and liquid oxygen showed that positrons in titanium monoxide are trapped by titanium vacancies. Experiments revealed that the lifetime of positrons in ordered and disordered titanium monoxide TiOy increases with increasing oxygen content y and varies from 184 to 210 ps. Data on the valence electron density permitted the prediction that the lifetime of free positrons in stoichiometric titanium monoxide is about 140 ps and the lifetime of positrons localized in an oxygen vacancy is about 170 ps. The method used to analyze the gamma-line Doppler broadening spectra makes it possible to determine the type and number of atoms around a vacancy and to investigate order–disorder phase transformations in nonstoichiometric compounds

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22.
Инвентарный номер: нет.
   
   A 10

   
    A Carbon–Silica Composite Material Based on Powdered Cellulose: Synthesis and Properties / A. B. Shishmakov, Yu. V. Mikushina, A. S. Seleznev, O. V. Koryakova, A. A. Valeeva, L. A. Petrov // Russian Journal of Applied Chemistry. - 2008. - Vol. 81, № 12. - P2180-2182 : il. - Bibliogr. : p. 2182 (15 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
КОМПОЗИТНЫЕ МАТЕРИАЛЫ -- КАРБОН-КРЕМНИЕВЫЕ КОМПОЗИТЫ
Аннотация: A procedure was developed for preparing a carbon–silica composite by thermolysis of powdered cellulose in the presence of tetraethoxysilane. The resulting composite was studied in model processes of trimethylhydroquinone oxidation and hydrogen peroxide decomposition

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23.
Инвентарный номер: нет.
   
   D 63

   
    Disintegration of a Coarse-Grained Vanadium Monoxide VOy Powder / A. A. Valeeva, D. A. Davydov, H. Schröttner, A. A. Rempel // Technical Physics. - 2009. - Vol. 54, № 11. - P1618-1621 : il. - Bibliogr. : p. 1621 (11 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОНООКСИД ВАНАДИЯ -- ПОРОШКИ
Аннотация: A coarse grained powder of nonstoichiometric cubic vanadium monoxide VOy is disintegrated in a Retch PM 200 planetary ball mill. Milling of the coarse grained vanadium monoxide powder VOy at a rate of rotation of 500 rpm for 2 h significantly broadens diffraction lines, and the crystal structure of vanadium monoxide VO1.00 after milling remains the same. High resolution scanning electron microscopy and X-ray diffraction studies of the microstructure of vanadium monoxide demonstrate that high energy milling can produce vanadium monoxide powders with an average crystallite size of 23 ± 10 nm. The vanadium monoxide produced by milling has a crystallite size that is half the crystallite size in the titanium monoxide produced by severe plastic deformation

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24.
Инвентарный номер: нет.
   
   S 98

   
    Synthesis and solar light catalytic properties of the titania-sulfide hybrid nanostructures / A. A. Rampel, E. A. Kozlova, T. I. Gorbunova, S. V. Cherepanova, E. Yu. Gerasimov, A. A. Valeeva, E. Yu. Korovin, S. V. Tsybulya, Ya. A. Shchipunov // 8-th European Meeting on Solar Chemistry and Photocatalysis: Environmental Applications - SPEA 8, Saloniki, 25-28 June 2014 : abstracts. - Saloniki : Aristotle University of Thessloniki, 2014. - С. 62
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
SYNTHESIS -- NANOSIZED METAL OXIDES -- TITANIUM DIOXIDE

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25.
Инвентарный номер: нет.
   
   V 18

    Valeeva, A. A.
    NbO disintegration by surfactant-assisted high-energy ball milling / A. A. Valeeva, A. A. Rempel, H. Schroettner // Inorganic Materials . - 2014. - Vol. 50, № 4. - P398-403
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОНООКСИД НИОБИЯ -- НАНОЧАСТИЦЫ -- АНАЛИЗ РЕНТГЕНОГРАФИЧЕСКИЙ

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26.
Инвентарный номер: нет.
   
   V 18

    Valeeva, A. A.
    In situ study of the temperature stability of TiO1.05 titanium monooxide using synchrotron radiation / A. A. Valeeva, A. A. Rempel, S. V. Tsybulya // Bulletin of the Russian Academy of Sciences: Physics. - 2013. - Vol. 77, № 2. - P134-137
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОНООКСИД ТИТАНА -- ФАЗОВЫЙ ПЕРЕХОД

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27.
Инвентарный номер: нет.
   
   R 74

   
    Role of structural vacancies in the stabilization of the basic B1 structure in nonstoichiometric titanium monoxide TiO y / M. G. Kostenko, V. P. Zhukov, A. A. Valeeva, A. A. Rempel, A. V. Lukoyanov // Bulletin of the Russian Academy of Sciences: Physics. - Vol. 77, № 3. - P309-313
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ЭНТАЛЬПИЯ -- МОНООКСИД ТИТАНА

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