Study of Thermally Activated Phase-Slip and Scaling of Magneto-Resistance Near TC in YBa2Cu3O7−δ/Ag bulk composites

Pratima, .; Vats, Seema

doi:10.1007/s10948-022-06206-8

Cited by 3 publications

(2 citation statements)

References 32 publications

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“…Исследования магнитотранспортных свойств получаемых сверхпроводящих материалов являются неотъемлемой частью их характеризации [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Это касается как, ставших уже " классическими", гранулярных высокотемпературных сверхпроводников (ВТСП), так и новых, " гидридных" сверхпроводников [13,14].…”

Section: Introductionunclassified

Влияние Внутригранульных Мейсснеровских Токов И Захваченного В Гранулах Потока На Эффективное Поле В Межгранульной Среде И Гистерезис Магнитосопротивления Гранулярного ВТСП

Балаев¹,

Семенов²,

Гохфельд³

2022

Физика Твердого Тела

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The concept of an effective field in an intergranular medium is used to describe the hysteresis magnetoresistance of granular HTSCs. This effective field is a superposition of the external magnetic field and the field induced by the magnetic moments of the superconducting granules. The magnetic moment of the granules is contributed by the shielding currents and the trapped magnetic flux. We studied and analyzed the effect of the trapped flux on the magnetoresistance. It has been experimentally shown that the dependence of the residual resistance (after applying of the external field) on the trapped flux clearly correlates with the behavior of the remanent magnetization. In addition, special attention was paid to a detailed comparison of the magnetoresistance of the granular YBa2Cu3O7-delta for two cases: (a) the magnetization of HTSC granules is caused only by the trapped magnetic flux (in a zero external field) and (b) HTSC granules are in the Meissner state (the external field is smaller than the first critical field of the granules). It has been found that Abrikosov vortices and intragranular Meissner currents differently affect the effective field in the intergranular medium (for the same values of magnetization for cases (a) and (b)). A possible reason for this difference is discussed.

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Section: Introductionunclassified

Влияние Внутригранульных Мейсснеровских Токов И Захваченного В Гранулах Потока На Эффективное Поле В Межгранульной Среде И Гистерезис Магнитосопротивления Гранулярного ВТСП

Балаев¹,

Семенов²,

Гохфельд³

2022

Физика Твердого Тела

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“…Studies of magnetotransport properties of the obtained superconducting materials are an integral part of their characterization [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. This applies both to the already " classical", granular high-temperature superconductors (HTS), and new, " hydride" superconductors [13,14].…”

Section: Introductionmentioning

confidence: 99%

Influence of intragranular Meissner currents and magnetic flux trapped in granules on the effective field in the intergranular medium and the magnetoresistance hysteresis of a granular HTSC

Balaev

S.V.

Gokhfeld

2022

Physics of the Solid State

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The concept of an effective field in an intergranular medium is used to describe the hysteresis magnetoresistance of granular HTSCs. This effective field is a superposition of the external magnetic field and the field induced by the magnetic moments of the superconducting granules. The magnetic moment of the granules is contributed by the shielding currents and the trapped magnetic flux. We studied and analyzed the effect of the trapped flux on the magnetoresistance. It has been experimentally shown that the dependence of the residual resistance RRem (after applying of the external field) on the trapped flux clearly correlates with the behavior of the remanent magnetization. In addition, special attention was paid to a detailed comparison of the magnetoresistance of the granular YBa2Cu3O7-delta for two cases: (a) the magnetization of HTSC-granules is caused only by the trapped magnetic flux (in a zero external field) and (b) HTSC-granules are in the Meissner state (the external field is smaller than the first critical field of the granules). It has been found that Abrikosov vortices and intragranular Meissner currents differently affect the effective field in the intergranular medium (for the same values (of magnetization for cases (a) and (b) ). A possible reason for this difference is discussed. Keywords: granular HTSC, magnetoresistance hysteresis, magnetization hysteresis, trapped flux, screening currents.

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Developing a Concept of an Effective Field in the Intergrain Medium of a Granular Superconductor: Effect of the Intragrain Meissner Currents and Abrikosov Vortices Trapped in Grains on the Magnetotransport Properties of a Y-Ba-Cu-O Granular HTS

Balaev,

Semenov,

Gokhfeld

2023

J Supercond Nov Magn

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Study of Thermally Activated Phase-Slip and Scaling of Magneto-Resistance Near TC in YBa2Cu3O7−δ/Ag bulk composites

Cited by 3 publications

References 32 publications

Influence of intragranular Meissner currents and magnetic flux trapped in granules on the effective field in the intergranular medium and the magnetoresistance hysteresis of a granular HTSC

Developing a Concept of an Effective Field in the Intergrain Medium of a Granular Superconductor: Effect of the Intragrain Meissner Currents and Abrikosov Vortices Trapped in Grains on the Magnetotransport Properties of a Y-Ba-Cu-O Granular HTS

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