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Ashimov, S. M.; Chigvinadze, D.G.

doi:10.1023/a:1016048428894

Cited by 14 publications

(10 citation statements)

References 9 publications

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“…на микроскопе ACM-550 AGILENT и рентгеновском дифрактометре Дрон УМ-1. Критическую температуру перехода в сверхпроводящее состояние T c определяли на автоматизированной многопрофильной установке [6] с чувствительностью на уровне СКВИД-магнитометра [7] по температурным зависимостям в интервале 77−300 K частоты колебаний ω = 2π/t (t -период) сверхпроводника в постоянном внешнем магнитном поле H.…”

Section: Introductionunclassified

Исследование критической температуры T-=SUB=-c-=/SUB=- гомофазных сверхпроводников (Bi-=SUB=-1.7-=/SUB=-Pb-=SUB=-0.3-=/SUB=-Sr-=SUB=-2-=/SUB=-Ca-=SUB=-(n-1)-=/SUB=-Cu-=SUB=-n-=/SUB=- O-=SUB=-y-=/SUB=- (n=3, 4, 5) и вольт-амперных характеристик сэндвич-пар полупроводник InP-сверхпроводник Bi/Pb (2223, 2234, 2245)

Gulamova¹,

Каримов²,

Chigvinadze³

et al. 2019

Журнал Технической Физики

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The electrophysical properties of semiconductor–superconductor sandwich pairs (InP–Bi/Pb 2223, 2234, 2245) are investigated, in which homophase superconductors based on bismuth cuprates with high reproducible critical temperatures of superconducting transition T _ c = 107–180 K are used. The advantage of melt solar technology for obtaining superconducting materials is demonstrated. The microstructure and phase composition of strongly anisotropic superconductors with nominal composition Bi_1.7Pb_0.3Sr_2Ca_( n _– 1)Cu_ n O_ y ( n = 3, 4, 5) are researched. A technique of experimental determination of superconducting transition critical temperatures T _ c in single-phase and homophase HTSC samples is presented. The current–voltage characteristics of InP–Bi/Pb pairs are investigated. The relationship between the electrical resistance of sandwich pairs and superconductor critical temperature T _ c is established.

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Section: Introductionunclassified

Исследование критической температуры T-=SUB=-c-=/SUB=- гомофазных сверхпроводников (Bi-=SUB=-1.7-=/SUB=-Pb-=SUB=-0.3-=/SUB=-Sr-=SUB=-2-=/SUB=-Ca-=SUB=-(n-1)-=/SUB=-Cu-=SUB=-n-=/SUB=- O-=SUB=-y-=/SUB=- (n=3, 4, 5) и вольт-амперных характеристик сэндвич-пар полупроводник InP-сверхпроводник Bi/Pb (2223, 2234, 2245)

Gulamova¹,

Каримов²,

Chigvinadze³

et al. 2019

Журнал Технической Физики

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“…Due to the layered critical structure and anisotropy, which are characteristic of HTSC, the conditions arise for appearance of different phases in the B-T (B is magnetic induction, T is temperature) diagram for them [6][7][8][9][10][11][12][13][14][15][16][17]. As example, in the Bi 1,7 Pb 0,3 Sr 2 Ca 2 Cu 3 O 10-δ (2223), during the increase of outer magnetic field (at T=const), the 3-dimentional Abrikosov`s vortices undergo phase transition in the 2-dimentional 2D vortices, so-called "pancake" ones.…”

Section: Introductionmentioning

confidence: 99%

Temperature dependence investigation of dissipation processes in strongly anisotropic hightemperature superconductors of Bi-Pb-Sr-Ca-Cu-O system synthesized using solar energy

Chigvinadze¹,

Acrivos²,

Ashimov³

et al. 2009

Epitoanyag - JSBCM

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The investigation of temperature dependence of damping and period of vibrations of HTSC superconductive cylinder of Bi-Pb-Sr-Ca-Cu-O system suspended by a thin elastic thread and performing axialtorsional vibrations in a magnetic field at temperatures above the critical one for the main phase T c =107 K were carried out. It was observed some "chaos" temperature region in the temperature interval 107-138 K, where it is seen separate ripples of dissipation and oscillation frequency. It is assumed that the "chaos" region could point to a possibility of existence of other magnetic and more high-temperature phases as single islands in a normal materials matrix.

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“…Due to the layered crystal structure and anisotropy of HTSC, these conditions satisfy many prerequisites for a phase transition [6][7][8][9][10][11][12][13][14][15][16][17]. For example, in the Bi-Pb-Sr-Ca-Cu-O(2223) system the three-dimensional 3D Abrikosov vortices experience a phase transition in the quasi-two-dimensional 2D vortices, * Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

The investigation of EPR paramagnetic probe line width and shape temperature dependence in high-temperature superconductors of Bi–Pb–Sr–Ca–Cu–O system

Chigvinadze¹,

Acrivos

Akhvlediani³

et al. 2009

Physics Letters A

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The work describes the appearance of magnetic phases in the strongly anisotropic high-temperature superconductor Bi 1.7 Pb 0.3 Sr 2 Ca 2 Cu 3 O 10−δ , in the temperature region where the superconductor is in the normal state, as determined by the EPR line width, H of a paramagnetic probe in its proximity. In the normal state, near 175 K > T c a peak in the temperature dependence of H develops with the characteristic time ∼ 17 min, which indicates the onset of a magnetic phase-domains in this material.

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Cited by 14 publications

References 9 publications

Temperature dependence investigation of dissipation processes in strongly anisotropic hightemperature superconductors of Bi-Pb-Sr-Ca-Cu-O system synthesized using solar energy

The investigation of EPR paramagnetic probe line width and shape temperature dependence in high-temperature superconductors of Bi–Pb–Sr–Ca–Cu–O system

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