О низкополевой электродинамике гранулированных ВТСП
Описаны исследования низкополевой электродинамики керамических сверхпроводников YBaCuO. Проведено аналитическое рассмотрение и численное моделирование в рамках модели пиннинга и вязкого течения гипервихрей в ВТСП зависимости вещественной и мнимой составляющих поверхностного импеданса от напряженност...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2000 |
| Автори: | , |
| Формат: | Стаття |
| Мова: | Russian |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2000
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | О низкополевой электродинамике гранулированных ВТСП / В.К. Игнатьев, И.В. Негинский // Физика низких температур. — 2000. — Т. 26, № 4. — С. 340-349. — Бібліогр.: 8 назв. — рос. |
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Игнатьев, В.К. Негинский, И.В. 2018-01-15T19:24:34Z 2018-01-15T19:24:34Z 2000 О низкополевой электродинамике гранулированных ВТСП / В.К. Игнатьев, И.В. Негинский // Физика низких температур. — 2000. — Т. 26, № 4. — С. 340-349. — Бібліогр.: 8 назв. — рос. 0132-6414 PACS: 74.60.Ec, 74.60.Jg https://nasplib.isofts.kiev.ua/handle/123456789/129056 Описаны исследования низкополевой электродинамики керамических сверхпроводников YBaCuO. Проведено аналитическое рассмотрение и численное моделирование в рамках модели пиннинга и вязкого течения гипервихрей в ВТСП зависимости вещественной и мнимой составляющих поверхностного импеданса от напряженности статического магнитного поля, амплитуды и частоты переменного поля. Представлены результаты экспериментальных исследований магнитополевых зависимостей составляющих импеданса. Частотный диапазон исследований - 30 Гц-1 кГц, амплитуда переменной составляющей поля лежит в пределах от 0,1 до 10 Э. Показано, что модель критического состояния применима к ВТСП в области низких частот и малых амплитуд переменной составляющей поля. Модель вязкого течения гипервихрей адекватно описывает низкополевую электродинамику ВТСП в широком частотном диапазоне, в частности, предсказывает экспериментально наблюдаемый гистерезис магнитополевых зависимостей поверхностного импеданса. Studies of the low-field electrodynamics of YBaCuO ceramic superconductors are described. An analytical treatment and a numerical simulation are carried out in the model of pinning and viscous flow of hypervortices in high-TcTc superconductors (HTSCs) to find the dependence of the real and imaginary components of the surface impedance on the modulus of a static magnetic field and on the amplitude and frequency of an alternating field. Experimental results are presented on the magnetic-field dependence of the impedance components. The studies were carried out in the frequency range from 30 Hz to 1 kHz and at amplitudes of the alternating component of the field from 0.1 to 10 Oe. It is shown that the critical-state model is applicable to HTSCs in the region of low frequencies and small amplitudes of the alternating component of the field. The model of viscous flow of hypervortices gives a good description of the low-field electrodynamics of HTSCs over a wide range of frequencies and, in particular, predicts the experimentally observed hysteresis of the magnetic-field dependence of the surface impedance. ru Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Свеpхпpоводимость, в том числе высокотемпеpатуpная О низкополевой электродинамике гранулированных ВТСП Low-field electrodynamics of granular high-temperature superconductors Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
О низкополевой электродинамике гранулированных ВТСП |
| spellingShingle |
О низкополевой электродинамике гранулированных ВТСП Игнатьев, В.К. Негинский, И.В. Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| title_short |
О низкополевой электродинамике гранулированных ВТСП |
| title_full |
О низкополевой электродинамике гранулированных ВТСП |
| title_fullStr |
О низкополевой электродинамике гранулированных ВТСП |
| title_full_unstemmed |
О низкополевой электродинамике гранулированных ВТСП |
| title_sort |
о низкополевой электродинамике гранулированных втсп |
| author |
Игнатьев, В.К. Негинский, И.В. |
| author_facet |
Игнатьев, В.К. Негинский, И.В. |
| topic |
Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| topic_facet |
Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| publishDate |
2000 |
| language |
Russian |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| title_alt |
Low-field electrodynamics of granular high-temperature superconductors |
| description |
Описаны исследования низкополевой электродинамики керамических сверхпроводников YBaCuO. Проведено аналитическое рассмотрение и численное моделирование в рамках модели пиннинга и вязкого течения гипервихрей в ВТСП зависимости вещественной и мнимой составляющих поверхностного импеданса от напряженности статического магнитного поля, амплитуды и частоты переменного поля. Представлены результаты экспериментальных исследований магнитополевых зависимостей составляющих импеданса. Частотный диапазон исследований - 30 Гц-1 кГц, амплитуда переменной составляющей поля лежит в пределах от 0,1 до 10 Э. Показано, что модель критического состояния применима к ВТСП в области низких частот и малых амплитуд переменной составляющей поля. Модель вязкого течения гипервихрей адекватно описывает низкополевую электродинамику ВТСП в широком частотном диапазоне, в частности, предсказывает экспериментально наблюдаемый гистерезис магнитополевых зависимостей поверхностного импеданса.
Studies of the low-field electrodynamics of YBaCuO ceramic superconductors are described. An analytical treatment and a numerical simulation are carried out in the model of pinning and viscous flow of hypervortices in high-TcTc superconductors (HTSCs) to find the dependence of the real and imaginary components of the surface impedance on the modulus of a static magnetic field and on the amplitude and frequency of an alternating field. Experimental results are presented on the magnetic-field dependence of the impedance components. The studies were carried out in the frequency range from 30 Hz to 1 kHz and at amplitudes of the alternating component of the field from 0.1 to 10 Oe. It is shown that the critical-state model is applicable to HTSCs in the region of low frequencies and small amplitudes of the alternating component of the field. The model of viscous flow of hypervortices gives a good description of the low-field electrodynamics of HTSCs over a wide range of frequencies and, in particular, predicts the experimentally observed hysteresis of the magnetic-field dependence of the surface impedance.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/129056 |
| citation_txt |
О низкополевой электродинамике гранулированных ВТСП / В.К. Игнатьев, И.В. Негинский // Физика низких температур. — 2000. — Т. 26, № 4. — С. 340-349. — Бібліогр.: 8 назв. — рос. |
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| first_indexed |
2025-11-26T02:05:58Z |
| last_indexed |
2025-11-26T02:05:58Z |
| _version_ |
1850607923483377664 |
| fulltext |
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