Influence of the flux creep on the irreversibility line of YBa2Cu3Oy (6.6≤y≤6.9) single crystals

N. Kobayashi; K. Hirano; Y. Minagawa; T. Sasaki; K. Watanabe; S. Awaji; H. Asaoka; H. Takei

doi:10.1016/0921-4534(94)92613-1

Influence of the flux creep on the irreversibility line of YBa₂Cu₃O_y (6.6≤y≤6.9) single crystals

N. Kobayashi, K. Hirano, Y. Minagawa, T. Sasaki, K. Watanabe, S. Awaji, H. Asaoka, H. Takei

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The temperature and angular dependence of the irreversibility field of YBa₂Cu₃O_y (6.6≤y≤6.9) single crystals have been investigated by magnetic measurements in magnetic fields up to 55kOe. The angular dependence of H_irr is well described by the expression, H_irrlnH_irr∝1/(cos²θ+γ^-2sin²θ)^{1 2}, which is expected from the flux creep model. The γ value is in good agreement with the effective mass ratio obtained from the angular dependence of the resistive transition.

Original language	English
Pages (from-to)	2785-2786
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	235-240
Issue number	PART 4
DOIs	https://doi.org/10.1016/0921-4534(94)92613-1
Publication status	Published - 1994 Dec

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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Influence of the flux creep on the irreversibility line of YBa₂Cu₃O_y (6.6≤y≤6.9) single crystals. / Kobayashi, N.; Hirano, K.; Minagawa, Y.; Sasaki, T.; Watanabe, K.; Awaji, S.; Asaoka, H.; Takei, H.

In: Physica C: Superconductivity and its applications, Vol. 235-240, No. PART 4, 12.1994, p. 2785-2786.

Research output: Contribution to journal › Article › peer-review

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abstract = "The temperature and angular dependence of the irreversibility field of YBa2Cu3Oy (6.6≤y≤6.9) single crystals have been investigated by magnetic measurements in magnetic fields up to 55kOe. The angular dependence of Hirr is well described by the expression, HirrlnHirr∝1/(cos2θ+γ-2sin2θ) 1 2, which is expected from the flux creep model. The γ value is in good agreement with the effective mass ratio obtained from the angular dependence of the resistive transition.",

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AU - Asaoka, H.

AU - Takei, H.

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