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Исследование проникновения магнитного потока в двусвязный ÑÐ²ÐµÑ€Ñ Ð¿Ñ€Ð¾Ð²Ð¾Ð´Ð½Ð¸Ðº II рода

выпускная квалификационная работа магистра

Исследование проникновения магнитного потока в двусвязный ÑÐ²ÐµÑ€Ñ Ð¿Ñ€Ð¾Ð²Ð¾Ð´Ð½Ð¸Ðº II рода

Abstract

Данная работа посвящена исследованию магнитных свойств сверхпроводников сплошных и неодносвязных (с полостью) для рационального использования их в технических приложениях. Конкретно в работе проводились исследования модельных сверхпроводников второго рода и произведены сравнения свойств для сплошных образцов и образцов с отверстием (неодносвязных). Рассмотрены статьи по исследованию магнитных свойств сверхпроводников и их технического применения. Проведены измерения зависимости магнитного момента M от магнитного поля H для сплошного и неодносвязного сверхпроводящего ниобия в поперечном поле. Измерения проведены с помощью вибрационного магнитометра автоматизированного комплекса PPMS. Проведены исследования полученных зависимостей для сплошных и полых сверхпроводников. Рассмотрено развитие скачков магнитного потока с изменением температуры. В результате было проанализировано влияние наличия полости в сверхпроводниках на процесс намагничивания. Приведен сравнительный анализ намагниченности сплошного сверхпроводника второго рода и с полостью.

This work is devoted to the study of the magnetic properties of solid and non-simply connected superconductors (with a cavity) for their rational use in technical applications. Specifically, in the work, model superconductors of the second kind were studied and properties were compared for continuous samples and samples with a hole (non-connected). Articles on the study of the magnetic properties of superconductors and their technical applications are considered. The dependence of the magnetic moment M on the magnetic field H was measured for continuous and non-simply connected superconducting niobium in a transverse field. The measurements were carried out using a vibration magnetometer of the automated PPMS complex. The obtained dependences are studied for solid and hollow superconductors. The development of magnetic flux jumps with temperature is considered. As a result, the influence of the presence of a cavity in superconductors on the magnetization process was analyzed. A comparative analysis of the magnetization of a continuous superconductor of the second kind and with a cavity is given.

Keywords

низкотемпературные ÑÐ²ÐµÑ€Ñ Ð¿Ñ€Ð¾Ð²Ð¾Ð´Ð½Ð¸ÐºÐ¸, critical temperature, ÑÐ²ÐµÑ€Ñ Ð¿Ñ€Ð¾Ð²Ð¾Ð´ÑÑ‰ÐµÐµ состояние, low-temperature superconductors, намагниченность, модель критического состояния, ÑÐ²ÐµÑ€Ñ Ð¿Ñ€Ð¾Ð²Ð¾Ð´Ð½Ð¸Ðº II рода, magnetization, промежуточное состояние, critical state model, magnetic potential well, магнитная потенциальная яма, critical field, magnetic levitation, superconductivity, скачки магнитного потока, magnetic flux jumps, intermediate state, двусвязный ÑÐ²ÐµÑ€Ñ Ð¿Ñ€Ð¾Ð²Ð¾Ð´Ð½Ð¸Ðº, superconductor type-II, критическая температура, doubly-connected superconductor, mixed state, ÑÐ²ÐµÑ€Ñ Ð¿Ñ€Ð¾Ð²Ð¾Ð´Ð¸Ð¼Ð¾ÑÑ‚ÑŒ, superconducting state, магнитная левитация, смешанное состояние, критическое поле

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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