Magnetic anisotropy of high-Tc superconductors Bi-2201 and Bi-2212 with various interlayer coupling

Kazuo Inoue; Shuichi Kawamata; Kiichi Okuda

Magnetic anisotropy of high-T_c superconductors Bi-2201 and Bi-2212 with various interlayer coupling

Kazuo Inoue, Shuichi Kawamata, Kiichi Okuda

Department of Materials Science and Engineering

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

Abstract

Magnetic anisotropy was investigated by magnetic torque measurements for the layered High-T_c superconductors La-substituted Bi₂Sr₂CuO_6+δ (Bi-2201) (T_c=28 K), zinc-phthalocyanine (ZnPc)-intercalated Bi₂Sr₂CaCu₂O_8+δ (Bi-2212) (T_c=55 K) and oxygen controlled Bi-2212 (T_c=57 approx. 86 K). Magnetic anisotropy is much affected by the interlayer coupling. The boundary of the crossover from three dimensional vortex lines to two dimensional vortex pancakes shifts toward higher field with increasing the interlayer coupling. The irreversible region in H-T phase diagram becomes small by decreasing the interlayer coupling.

Original language	English
Pages (from-to)	17-20
Number of pages	4
Journal	Bulletin of the University of Osaka Prefecture, Series A Engineering and Natural Sciences
Volume	45
Issue number	1
Publication status	Published - 1996 Dec 1

ASJC Scopus subject areas

Engineering(all)

Cite this

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abstract = "Magnetic anisotropy was investigated by magnetic torque measurements for the layered High-Tc superconductors La-substituted Bi2Sr2CuO6+δ (Bi-2201) (Tc=28 K), zinc-phthalocyanine (ZnPc)-intercalated Bi2Sr2CaCu2O8+δ (Bi-2212) (Tc=55 K) and oxygen controlled Bi-2212 (Tc=57 approx. 86 K). Magnetic anisotropy is much affected by the interlayer coupling. The boundary of the crossover from three dimensional vortex lines to two dimensional vortex pancakes shifts toward higher field with increasing the interlayer coupling. The irreversible region in H-T phase diagram becomes small by decreasing the interlayer coupling.",

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AU - Inoue, Kazuo

AU - Kawamata, Shuichi

AU - Okuda, Kiichi

PY - 1996/12/1

Y1 - 1996/12/1

N2 - Magnetic anisotropy was investigated by magnetic torque measurements for the layered High-Tc superconductors La-substituted Bi2Sr2CuO6+δ (Bi-2201) (Tc=28 K), zinc-phthalocyanine (ZnPc)-intercalated Bi2Sr2CaCu2O8+δ (Bi-2212) (Tc=55 K) and oxygen controlled Bi-2212 (Tc=57 approx. 86 K). Magnetic anisotropy is much affected by the interlayer coupling. The boundary of the crossover from three dimensional vortex lines to two dimensional vortex pancakes shifts toward higher field with increasing the interlayer coupling. The irreversible region in H-T phase diagram becomes small by decreasing the interlayer coupling.

AB - Magnetic anisotropy was investigated by magnetic torque measurements for the layered High-Tc superconductors La-substituted Bi2Sr2CuO6+δ (Bi-2201) (Tc=28 K), zinc-phthalocyanine (ZnPc)-intercalated Bi2Sr2CaCu2O8+δ (Bi-2212) (Tc=55 K) and oxygen controlled Bi-2212 (Tc=57 approx. 86 K). Magnetic anisotropy is much affected by the interlayer coupling. The boundary of the crossover from three dimensional vortex lines to two dimensional vortex pancakes shifts toward higher field with increasing the interlayer coupling. The irreversible region in H-T phase diagram becomes small by decreasing the interlayer coupling.

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Magnetic anisotropy of high-T_c superconductors Bi-2201 and Bi-2212 with various interlayer coupling

Abstract

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