Effects of the seed distance on the characteristics of the (100)/(100) junctions of top-seeded melt growth processed YBCO superconductors using two seeds

Kim, Chan-Joong; Kim, Ho-Jin; Joo, Jinho; Hong, Guang; Han, Sang-Chul; Han, Young-Hee; Sung, Tae–Hyun; Kim, Sang-Joon

doi:10.1016/s0921-4534(00)00292-6

Cited by 37 publications

(28 citation statements)

References 22 publications

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“…A number of articles on various multiseeding processes have been published subsequently based on a variety of seed arrangements with largely inconsistent results . However, it can be concluded from these studies that the multiseeding process always creates grain boundaries and that solidified liquid phases accumulate in their vicinity. The field trapping ability of multiseeded samples has been measured only rarely and is inevitably lower than the trapped field measured in samples seeded using only a single seed .…”

Section: Introductionmentioning

confidence: 99%

A Comparison of 0°–0° and 45°–45° bridge‐Seeded, YBCO single grains

et al. 2013

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A variety of multiseeding techniques have been investigated over the past 20 yr in an attempt to enlarge bulk (RE)BCO superconducting samples fabricated by the top-seeded melt growth (TSMG) process for practical applications. Unfortunately, these studies have failed to establish whether technically useful values of trapped field can be achieved in multiseeded bulk samples. In this work specially designed, 0°-0°and 45°-45°bridge seeds of different lengths have been employed to produce improved alignment of the seeds during the TSMG process. The ability of these bridge-seeded samples to trap magnetic field, which is the key superconducting property for practical applications of bulk (RE)BCO, is compared for the samples seeded using 0°-0°and 45°-45°bridge seeds of different lengths. The grain boundaries produced by these bridge seeds are analyzed in detail, and the similarities and differences between the two bridge-seeding processes are discussed.

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Section: Introductionmentioning

confidence: 99%

A Comparison of 0°–0° and 45°–45° bridge‐Seeded, YBCO single grains

et al. 2013

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“…Unfortunately, the MSMG method may result in the trapping of unreacted liquid phase material at grain boundaries, which can degrade the field trapping ability of the bulk sample. [7][8][9][10][11] The presence of unreacted liquid has been observed frequently at the (100)/(100) grain boundary, but rarely at the (110)/(110) grain boundary. [8][9][10] SmBCO (Sm-123) and NdBCO (Nd-123) bulk and single crystal superconductors are used commonly as seeds for the growth of single grain YBCO due to their good lattice match and higher melting points than the Y-123 phase.…”

Section: Introductionmentioning

confidence: 99%

Multiseeded melt growth of bulk Y–Ba–Cu–O using thin film seeds

Wang

Sun

et al. 2010

Journal of Applied Physics

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“…Это достигается за счет текстурирования материала и улучшения ориентации зерен, улучшения проводимости границ зерен (отсутствие слабых связей между зернами) и создания центров пиннинга магнитного потока. К основным методам синтеза материалов с высокой степенью текстуры можно отнести следующие [18,19]: -медленное охлаждение в однородном температурном поле (с нулевым градиентом по температуре); -медленное охлаждение в градиентном температурном поле без перемещения образца (метод Бриджмена); -градиентная кристаллизация с перемещением горячей зоны (Zone-Melt (MZ)) -метод зонной плавки; -метод направленной кристаллизации с затравкой (Seeded-Directional-Solidification (SDS));…”

Section: материалы используемые в сверхпроводящих магнитолевитационных технологиях 1объемные втсп-материалыunclassified

Физические Принципы Создания Магнитолевитационных Систем На Основе Высокотемпературных Сверхпроводящих Композитов Второго Поколения (Обзор)

Руднев¹,

Анищенко²

2021

Журнал Технической Физики

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An overview of experimental and theoretical studies of the characteristics of maglev systems using high-temperature superconductors (HTSC) is presented. Materials used in maglev technologies, namely bulk superconductors and HTSC tape composites, are considered. The main experimental data obtained on both bulk and tape superconductors assembled in stacks of various configurations are demonstrated. The factors influencing the magneto-force characteristics are analyzed: geometric parameters, the influence of external alternating magnetic fields, temperatures, relaxation phenomena. A significant part of the review is devoted to the description of various methods for calculating maglev systems, including those based on stacks of HTSC composites. The features of thermal processes in maglev systems with cryocooler and nitrogen cooling are considered. General recommendations for the creation of optimal maglev systems based on tape HTSC composites are given.

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Effects of the seed distance on the characteristics of the (100)/(100) junctions of top-seeded melt growth processed YBCO superconductors using two seeds

Cited by 37 publications

References 22 publications

A Comparison of 0°–0° and 45°–45° bridge‐Seeded, YBCO single grains

A Comparison of 0°–0° and 45°–45° bridge‐Seeded, YBCO single grains

Multiseeded melt growth of bulk Y–Ba–Cu–O using thin film seeds

Физические Принципы Создания Магнитолевитационных Систем На Основе Высокотемпературных Сверхпроводящих Композитов Второго Поколения (Обзор)

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