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 Найдено в других БД:Каталог книг и продолжающихся изданий (8)Труды сотрудников Института химии твердого тела УрО РАН (14)
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Поисковый запрос: (<.>K=SUPERCONDUCTORS<.>)
Общее количество найденных документов : 30
Показаны документы с 1 по 10
 1-10    11-20   21-30  
1.
Инвентарный номер: нет.
   
   S 66


    Skokov, V. N.
    An experimental study of 1/f-fluctuations at nonequilibrium first-order phase transitions under joule selfheating of high-temperature superconductors cooled by boiling nitrogen [Text] / V. N. Skokov, V. P. Koverda // Nucleation and Non-linear Prolems in the First-Order Phase Transitions (NPT'98): Final Programme and Book of Abstracts: First Int. Workshop (St. Peterburg, Pussia, 29 June - 3 July 1998). - 1998. - P45-46
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ПЕРЕХОД НЕРАВНОВЕСНЫЙ -- неравновесные переходы -- ПЕРЕХОД ФАЗОВЫЙ I РОДА -- САМОРАЗОГРЕВ ДЖОУЛЯ -- ДЖОУЛЯ САМОРАЗОГРЕВ -- СВЕРХПРОВОДНИКИ ВЫСОКОТЕМПЕРАТУРНЫЕ -- ВЫСОКОТЕМПЕРАТУРНЫЕ СВЕРХПРОВОДНИКИ -- АЗОТ КИПЯЩИЙ -- КИПЯЩИЙ АЗОТ -- АЗОТ -- N

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2.
Инвентарный номер: нет.
   
   S 66


    Skokov, V. N.
    An experimental study of 1/f-fluctuations at nonequilibrium first-order phase transitions under joule selfheating of high-temperature superconductors cooled by boiling nitrogen [Text] / V. N. Skokov, V. P. Koverda // Nucleation and Non-linear Prolems in the First-Order Phase Transitions (NPT'98): Final Programme and Book of Abstracts: First Int. Workshop (St. Peterburg, Pussia, 29 June - 3 July 1998). - 1998. - P45-46
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ПЕРЕХОД НЕРАВНОВЕСНЫЙ -- неравновесные переходы -- ПЕРЕХОД ФАЗОВЫЙ I РОДА -- САМОРАЗОГРЕВ ДЖОУЛЯ -- ДЖОУЛЯ САМОРАЗОГРЕВ -- СВЕРХПРОВОДНИКИ ВЫСОКОТЕМПЕРАТУРНЫЕ -- ВЫСОКОТЕМПЕРАТУРНЫЕ СВЕРХПРОВОДНИКИ -- АЗОТ КИПЯЩИЙ -- КИПЯЩИЙ АЗОТ -- АЗОТ -- N

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3.
Инвентарный номер: нет.
   
   S 66


    Skokov, V. N.
    Characteristics of chaotic vibrations of normal zone in thin films of high-temperature superconductors [] / V. N. Skokov, V. B. Ivakin, V. P. Koverda // Pisma V Zhurnal Teknicheskoi Fiziki. - 1995. - V.21, Is.16. - С. 37-43
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CHAOTIC VIBRATIONS

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4.
Инвентарный номер: нет.
   
   S 66


    Skokov, V. N.
    Characteristics of chaotic vibrations of normal zone in thin films of high-temperature superconductors [] / V. N. Skokov, V. B. Ivakin, V. P. Koverda // Pisma V Zhurnal Teknicheskoi Fiziki. - 1995. - V.21, Is.16. - С. 37-43
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CHAOTIC VIBRATIONS

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5.
Инвентарный номер: нет.
   
   Z 19


    Zakharov, M. S.
    Effect of External Nonuniform Magnetic Field on Flux Creep Process in Superconductor [Electronic resource] / M. S. Zakharov, B. M. Smolyak, G. V. Ermakov // Journal of Superconductivity and Novel Magnetism. - 2012. - Article in Press. - P1-4
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CRITICAL STATE -- MAGNETIC RELAXATION -- SUPERCONDUCTORS
Аннотация: The effect of an external nonuniform magnetic field on the flux creep rate in a high-temperature superconductor with trapped magnetic flux was studied. The magnetic relaxation was suppressed when the superconductor was put into a field of permanent magnets or when it approached a ferromagnet. The effect arises when the field sources (being magnetized, the ferromagnet produces its own field) are placed near the superconductor surface, where the flux line ends are located. For these cases, we carried out the calculations of vortex and current density distributions, which demonstrate that reverse currents flow in the near-surface regions of the sample. This verifies the hypothesis suggested earlier about the influence of counter Lorentz forces retarding the creep of the vortices. In the interpretation of the results, we also take into consideration the magnetic force acting on the vortex ends in the external nonuniform magnetic field that allows us to explain the experimental results, in which the current structure in the sample is unipolar

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6.
Инвентарный номер: нет.
   
   Z 19


    Zakharov, M. S.
    Effect of External Nonuniform Magnetic Field on Flux Creep Process in Superconductor [Electronic resource] / M. S. Zakharov, B. M. Smolyak, G. V. Ermakov // Journal of Superconductivity and Novel Magnetism. - 2012. - Article in Press. - P1-4
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CRITICAL STATE -- MAGNETIC RELAXATION -- SUPERCONDUCTORS
Аннотация: The effect of an external nonuniform magnetic field on the flux creep rate in a high-temperature superconductor with trapped magnetic flux was studied. The magnetic relaxation was suppressed when the superconductor was put into a field of permanent magnets or when it approached a ferromagnet. The effect arises when the field sources (being magnetized, the ferromagnet produces its own field) are placed near the superconductor surface, where the flux line ends are located. For these cases, we carried out the calculations of vortex and current density distributions, which demonstrate that reverse currents flow in the near-surface regions of the sample. This verifies the hypothesis suggested earlier about the influence of counter Lorentz forces retarding the creep of the vortices. In the interpretation of the results, we also take into consideration the magnetic force acting on the vortex ends in the external nonuniform magnetic field that allows us to explain the experimental results, in which the current structure in the sample is unipolar

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7.
Инвентарный номер: нет.
   
   S 68


    Smolyak, B. M.
    Effects of relaxation in levitating superconductors / B. M. Smolyak, G. N. Perelshtein, G. V. Ermakov (Yermakov) // Cryogenics. - 2002. - Vol.42, №10. - С. 635-644
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
SUPERCONDUCTORS -- FLUX CREEP -- MAGNETIC LEVITATION
Аннотация: The effect of the magnetic flux creep on the levitation stability of high-temperature superconductors was studied. It was shown experimentally that under a unipolar magnetization the levitation force decreased at a logarithmic velocity characteristic of the creep process. If the current structure was bi- or multi-polar one, which was formed in a sample exposed to a reversing external magnetic field, the force remained unchanged during a certain period of time. The theory of relaxation of magnetization and force for a partial and full penetration of the critical state was considered. It was shown that relaxation decelerated sharply if the region with a current producing the main magnetization was far from the superconductor surface. A concept of an open and internal magnetic relaxation was introduced. The time of the internal relaxation for different reverse depths was estimated. The calculated values approached the experimental values of the levitation stabilization time

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8.
Инвентарный номер: нет.
   
   S 68


    Smolyak, B. M.
    Effects of relaxation in levitating superconductors / B. M. Smolyak, G. N. Perelshtein, G. V. Ermakov (Yermakov) // Cryogenics. - 2002. - Vol.42, №10. - С. 635-644
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
SUPERCONDUCTORS -- FLUX CREEP -- MAGNETIC LEVITATION
Аннотация: The effect of the magnetic flux creep on the levitation stability of high-temperature superconductors was studied. It was shown experimentally that under a unipolar magnetization the levitation force decreased at a logarithmic velocity characteristic of the creep process. If the current structure was bi- or multi-polar one, which was formed in a sample exposed to a reversing external magnetic field, the force remained unchanged during a certain period of time. The theory of relaxation of magnetization and force for a partial and full penetration of the critical state was considered. It was shown that relaxation decelerated sharply if the region with a current producing the main magnetization was far from the superconductor surface. A concept of an open and internal magnetic relaxation was introduced. The time of the internal relaxation for different reverse depths was estimated. The calculated values approached the experimental values of the levitation stabilization time

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9.
Инвентарный номер: нет.
   
   S 68


    Smolyak, B. M.
    Elimination of magnetic relaxation in superconductors on approaching a ferromagnet / B. M. Smolyak, G. V. Ermakov // Physica C. - 2010. - Vol.470, №3. - С. 218-220
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
MAGNETIC RELAXATION -- FERROMAGNET -- MAGNETIC STRUCTURE
Аннотация: It is found that magnetic relaxation is suppressed in a high-temperature superconductor when it approaches a ferromagnet. It is supposed that this phenomenon results from formation of a nonequilibrium magnetic structure, in which counter driving forces act in different regions

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10.
Инвентарный номер: нет.
   
   S 68


    Smolyak, B. M.
    Elimination of magnetic relaxation in superconductors on approaching a ferromagnet / B. M. Smolyak, G. V. Ermakov // Physica C. - 2010. - Vol.470, №3. - С. 218-220
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
MAGNETIC RELAXATION -- FERROMAGNET -- MAGNETIC STRUCTURE
Аннотация: It is found that magnetic relaxation is suppressed in a high-temperature superconductor when it approaches a ferromagnet. It is supposed that this phenomenon results from formation of a nonequilibrium magnetic structure, in which counter driving forces act in different regions

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