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1.
Инвентарный номер: нет.
   
   M 46


    Medvedeva, N. I.
    FIrst-principles study of structural, elastic, and electronic properties of M23C6 and MC carbides (M=RU, RH, PD, OS, IR, and PT) / N. I. Medvedeva, A. L. Ivanovskii // Physica Status Solidi (B): Basic SoliD State Physics . - Vol. 251, № 1. - P148-154
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
КАРБИДЫ -- СВОЙСТВА ЭЛЕКТРОННЫЕ

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2.
Инвентарный номер: нет.
   
   S 53


    Shein, I. R.
    Elastic, electronic properties and intra-atomic bonding in orthorhombic and tetragonal polymorphs of BaZn2As2 from first-principles calculations / I. R. Shein, A. L. Ivanovskii // Journal of Alloys and Compounds. - 2014. - Vol. 583. - P100-105.
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СВОЙСТВА ЭЛЕКТРОННЫЕ -- РАСЧЕТЫ
Аннотация: Very recently, on the example of hole- and spin-doped BaZn2As2, quite an unexpected area of potential applications of 122-like phases was proposed as a promising platform for searching the new diluted magnetic semiconductors (DMSs) (2013; K. Zhao, et al, Nature Commun. 4:1442). Herein, by means of the first-principles calculations, we have examined in detail the basic structural, elastic, electronic properties and the peculiarities of the inter-atomic bonding in α and β polymorphs of 122-like BaZn2As2 – a parent phase of the new DMSs. Our characterization of these materials covers the optimized structural parameters, the main elastic parameters (elastic constants, bulk, shear, and Young’s moduli, Poisson’s ratio, anisotropy indexes, and Pugh’s criterion), as well as electronic bands and densities of electronic states.

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3.
Инвентарный номер: нет.
   
   S 91


    Suetin, D. V.
    Structural and electronic properties of eight ternary semiconducting acetylides A2MC2 (where A=Na, K, Rb, and Cs; M=Pd and Pt) as obtained from first-principles calculations / D. V. Suetin, A. L. Ivanovskii // Materials Science in Semiconductor Processing. - 2014. - Vol. 19. - P72-77
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ПАЛЛАДИЙ -- ПЛАТИНА -- ЭЛЕКТРОННЫЕ СВОЙСТВА
Аннотация: By means of the first-principle calculations, we have systematically investigated the structural and electronic properties of a complete series of known ternary palladium and platinum acetylides: Na2PdC2, K2PdC2, Rb2PdC2, Cs2PdC2, Na2PtC2, K2PtC2, Rb2PtC2, and Cs2PtC2. Our results cover the optimized lattice parameters, inter-atomic distances, formation and cohesive energies, as well as electronic bands, total and atomic-resolved l-projected densities of electronic states (DOSs), which are discussed in comparison with available experimental and theoretical data.

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4.
Инвентарный номер: нет.
   
   S 53


    Shein, I. R.
    Electronic band structure, Fermi surface, structural and elastic properties of two polymorphs of MgFeSeO as possible new superconducting systems / I. R. Shein // Письма в Журнал экспериментальной и теоретической физики. - 2013. - Т. 98, № 10. - P682-686 : ил. - Библиогр.: с. 686 (35 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СВЕРХПРОВОДНИКИ -- MgFeSeO -- ПОВЕРХНОСТЬ ФЕРМИ
Аннотация: Electronic band structure, Fermi surface, structural and elastic properties of two polymorphs of MgFeSeO as possible new superconducting systems By means of DFT-based first principles calculations, we examine two polymorphs of the newly symthesized 1111-like MgFeSeO as possible new superconducting systems. We have found that the polymorph with blocks [MgO], where Mg atoms are placed in the centers of O4 tetrahedra, is dynamically unstable - unlike the ZrCuSiAs-type polymorph with oxygen atoms placed in the centers of O4

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5.
Инвентарный номер: нет.
   
   S 53


    Shein, I. R.
    First-principles calculations of elastic and electronic properties of tetragonal Th2NiC2 as a parent phase for new superconductors / I. R. Shein, A. L. Ivanovskii // Journal of Alloys and Compounds. - 2013. - Vol. 551. - P338-342 : il. - Bibliogr. : p. 341-342 (36 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
Th2NiC2 -- ELASTIC PROPERTIES -- AB INITIO CALCULATIONS -- INTER-ATOMIC BONDING -- ELECTRONIC PROPERTIES
Аннотация: This work reports on the elastic, electronic properties and inter-atomic bonding of the newly discovered superconductor Th2NiC2 as obtained within ab initio calculations. We found that Th2NiC2 is mechanically stable and it will behave as a ductile material exhibiting enhanced elastic anisotropy in shear and a rather low hardness. The inter-atomic bonding in Th2NiC2 is described as an anisotropic mixture of covalent and ionic contributions, where inside [Th2C2] blocks covalent Th–C bonds emerge, and these blocks are bonded with the Ni atomic sheets through directional Ni–C bonds. Additionally, some inter-atomic ionic Th–C interactions occur owing to charge transfer Th → C. Our data reveal that for Th2NiC2 the Fermi level is located in a deep DOS minimum and the experimentally observed increase in TC in the sequence Th2NiC2 → Th1.8Sc0.2NiC2 may be explained by the growth of N(EF). We also speculate that an increase in N(EF) (and, probably, in TC) for Th2NiC2-based materials may be also achieved by an alternative way: by electron doping – for example, by partial substitution of V for Th or Cu for Ni, as well as by partial substitution of N for C with the formation of Th–Ni carbonitrides like Th2NiC2−xNx

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6.
Инвентарный номер: нет.
   
   S 53


    Shein, I. R.
    Ab initio probing of the electronic band structure and Fermi surface of fluorine-doped WO3 as a novel low-TC superconductor / I. R. Shein, A. L. Ivanovskii // Письма в Журнал экспериментальной и теоретической физики. - 2012. - Т. 95, № 1-2. - С.72-75 : рис., табл., граф. - Библиогр.: с. 75 (20 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ПОВЕРХНОСТЬ ФЕРМИ -- ДОПИРОВАНИЕ -- ФТОР -- СВЕРХПРОВОДНИКИ НИЗКОТЕМПЕРАТУРНЫЕ -- ОКСИФТОРИД ВОЛЬФРАМА
Аннотация: First-principles calculations were performed to investigate the electronic structure and the Fermi surface of the newly discovered low-temperature superconductor: fluorine-doped WO3. We find that F doping provides the transition of the insulating tungsten trioxide into a metallic-like phase WO3-xFx, where the near-Fermi states are formed mainly from W 5d with admixture of O 2p-orbitals. The cooperative effect of fluorine additives in WO3 consists in change of electronic concentration as well as the lattice constant. At probing their influence on the near-Fermi states separately, the dominant role of the electronic factor for the transition of tungsten oxyfluoride into superconducting state was established. The volume of the Fermi surface gradually increases with the increase of the doping. In the sequence WO3> WO2.5F0.5 the effective atomic charges of W and O ions decrease, but much less, than it is predicted within the idealized ionic model - owing to presence of the covalent interactions W-O and W-F

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7.
Инвентарный номер: нет.
   
   S 53


    Shein, I. R.
    Electronic band structure and Fermi surface for new layered superconductor LaO0.5F0.5BiS2 in comparison with parent phase LaOBiS2 from first principles / I. R. Shein, A. L. Ivanovskii // Письма в Журнал экспериментальной и теоретической физики. - 2012. - Т. 96, № 12. - С. 859-864. - Библиогр.: с. 864 (27 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СВЕРХПРОВОДИМОСТЬ -- ПЕРЕНОС ЗАРЯДА

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8.
Инвентарный номер: нет.
   
   A 90


   
    Atomic defects on the surface of quasi two-dimensional layered titanium dichalcogenides: STM experiment and quantum chemical simulation / A. S. Razinkin, A. N. Enyashin, T. V. Kuznetsova, A. N. Titov, M. V. Kuznetsov, A. L. Ivanovskii // Journal of Structural Chemistry. - 2010. - Vol. 51, № 4. - P737-743 : il. - Bibliogr. : p. 743 (13 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ДИХАЛЬКОГЕНИДЫ ТИТАНА -- СКАНИРУЮЩАЯ ТУННЕЛЬНАЯ СПЕКТРОСКОПИЯ -- КВАНТОВО-ХИМИЧЕСКОЕ МОДЕЛИРОВАНИЕ

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9.
Инвентарный номер: нет.
   
   S 81


    Ivanovskaya, V. V.
    Simulation of Novel Superhard Carbon Materials Based on Fullerenes and Nanotubes / V. V. Ivanovskaya, A. L. Ivanovskii // Journal of Superhard Materials. - 2010. - Vol. 32, № 2. - P67-87 : il. - Bibliogr. : p. 82-87 (143 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОДЕЛИРОВАНИЕ -- СВЕРХТВЕРДЫЕ МАТЕРИАЛЫ -- ФУЛЛЕРЕНЫ -- НАНОТРУБКИ
Аннотация: The state-of-the-art in theoretical research directed at the search for superhard materials based on carbon fullerenes and nanotubes has been briefly reviewed. The data available on elastic properties of the main groups of condensed phases that form due to the interaction of fullerenes or (and) nanotubes because of both weak (of the van der Waals type) bonds and polymerization to form strong covalent sp3 bonds have been considered. Models for new hypothetical carbon nanostructured materials (the so called autointercalated hyperdiamonds, covalently bonded lattices of nanotubes, tubular cubic crystals, etc.) are discussed, and elastic properties of them are considered as related to their atomic structure, special features of their electronic structure and chemical bond have been discussed. The problems of synthesis of these systems are briefly considered

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10.
Инвентарный номер: нет.
   
   B 22


    Bannikov, V. V.
    Structural, electronic, and magnetic properties of CaCNi3, SrCNi3, and BaCNi3 antiperovskites in comparison to superconducting MgCNi3 / V. V. Bannikov, I. R. Shein, A. L. Ivanovskii // Journal of Structural Chemistry. - 2010. - Vol. 51, № 1. - P170-172 : il. - Bibliogr. : p. 172 (10 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
АНТИПЕРОВСКИТЫ -- МАГНЕТИЗМ -- МОДЕЛИРОВАНИЕ
Аннотация: Within the first principle FLAPW-GGA band method we predict the structural, electronic, and magnetic properties of CaCNi3, SrCNi3, and BaCNi3 hypothetical antiperovskites. The results are discussed in comparison to the MgCNi3 isostructural superconductor

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