Effect of Lower Critical Fields on Magnetization of a Single-Crystal Bi2Sr2CaCu2O8+d Bulk Superconductor

Shinjiro Tochihara; Ken ichiro Harashima; Hiroshi Yasuoka; Hiromasa Mazaki; Minoru Osada; Masato Kakihana

Effect of Lower Critical Fields on Magnetization of a Single-Crystal Bi₂Sr₂CaCu₂O_8+d Bulk Superconductor

Shinjiro Tochihara^*, Ken ichiro Harashima, Hiroshi Yasuoka, Hiromasa Mazaki, Minoru Osada, Masato Kakihana

^*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

To test the utility of the modified Kim-Anderson critical-state model for study of the magnetic response of ceramic superconductors, we measured the initial magnetization, hysteresis loops and ac complex susceptibilities χ_n = χ′_n - iχ″_n(n = 1, 2, 3, 5) of a single-crystal Bi₂Sr₂CaCu₂O_8+d bulk sample. The results were simulated in the framework of the model. Analyses of χ_n have shown that generation of the higher harmonics can be qualitatively reproduced, where the material parameters k and B₀, surface barriers ΔH and lower critical fields H_cl involved were used as fitting parameters. Comparison of the observed data with the calculated results has revealed that nonzero values of H_cl play an essential role in the magnetic characteristics of the sample.

Original language	English
Pages (from-to)	135-139
Number of pages	5
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	45
Issue number	2
Publication status	Published - 1998 Feb
Externally published	Yes

Keywords

Lower critical field
Modified Kim-Anderson critical-state model
Single-crystal BiSrCaCuO
Surface barrier

ASJC Scopus subject areas

Mechanical Engineering
Metals and Alloys

Cite this

Effect of Lower Critical Fields on Magnetization of a Single-Crystal Bi₂Sr₂CaCu₂O_8+d Bulk Superconductor. / Tochihara, Shinjiro; Harashima, Ken ichiro; Yasuoka, Hiroshi et al.
In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 45, No. 2, 02.1998, p. 135-139.

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

@article{ad8c37c995fc45fc8b57cd305e0ec21f,

title = "Effect of Lower Critical Fields on Magnetization of a Single-Crystal Bi2Sr2CaCu2O8+d Bulk Superconductor",

abstract = "To test the utility of the modified Kim-Anderson critical-state model for study of the magnetic response of ceramic superconductors, we measured the initial magnetization, hysteresis loops and ac complex susceptibilities χn = χ′n - iχ″n(n = 1, 2, 3, 5) of a single-crystal Bi2Sr2CaCu2O8+d bulk sample. The results were simulated in the framework of the model. Analyses of χn have shown that generation of the higher harmonics can be qualitatively reproduced, where the material parameters k and B0, surface barriers ΔH and lower critical fields Hcl involved were used as fitting parameters. Comparison of the observed data with the calculated results has revealed that nonzero values of Hcl play an essential role in the magnetic characteristics of the sample.",

keywords = "Lower critical field, Modified Kim-Anderson critical-state model, Single-crystal BiSrCaCuO, Surface barrier",

author = "Shinjiro Tochihara and Harashima, {Ken ichiro} and Hiroshi Yasuoka and Hiromasa Mazaki and Minoru Osada and Masato Kakihana",

year = "1998",

month = feb,

language = "English",

volume = "45",

pages = "135--139",

journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",

issn = "0532-8799",

publisher = "Funtai Funamtsu Yakin Kyokai/Japan Soc. of Powder Metallurgy",

number = "2",

}

TY - JOUR

T1 - Effect of Lower Critical Fields on Magnetization of a Single-Crystal Bi2Sr2CaCu2O8+d Bulk Superconductor

AU - Tochihara, Shinjiro

AU - Harashima, Ken ichiro

AU - Yasuoka, Hiroshi

AU - Mazaki, Hiromasa

AU - Osada, Minoru

AU - Kakihana, Masato

PY - 1998/2

Y1 - 1998/2

N2 - To test the utility of the modified Kim-Anderson critical-state model for study of the magnetic response of ceramic superconductors, we measured the initial magnetization, hysteresis loops and ac complex susceptibilities χn = χ′n - iχ″n(n = 1, 2, 3, 5) of a single-crystal Bi2Sr2CaCu2O8+d bulk sample. The results were simulated in the framework of the model. Analyses of χn have shown that generation of the higher harmonics can be qualitatively reproduced, where the material parameters k and B0, surface barriers ΔH and lower critical fields Hcl involved were used as fitting parameters. Comparison of the observed data with the calculated results has revealed that nonzero values of Hcl play an essential role in the magnetic characteristics of the sample.

AB - To test the utility of the modified Kim-Anderson critical-state model for study of the magnetic response of ceramic superconductors, we measured the initial magnetization, hysteresis loops and ac complex susceptibilities χn = χ′n - iχ″n(n = 1, 2, 3, 5) of a single-crystal Bi2Sr2CaCu2O8+d bulk sample. The results were simulated in the framework of the model. Analyses of χn have shown that generation of the higher harmonics can be qualitatively reproduced, where the material parameters k and B0, surface barriers ΔH and lower critical fields Hcl involved were used as fitting parameters. Comparison of the observed data with the calculated results has revealed that nonzero values of Hcl play an essential role in the magnetic characteristics of the sample.

KW - Lower critical field

KW - Modified Kim-Anderson critical-state model

KW - Single-crystal BiSrCaCuO

KW - Surface barrier

UR - http://www.scopus.com/inward/record.url?scp=0031995136&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031995136&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0031995136

SN - 0532-8799

VL - 45

SP - 135

EP - 139

JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

IS - 2

ER -

Effect of Lower Critical Fields on Magnetization of a Single-Crystal Bi₂Sr₂CaCu₂O_8+d Bulk Superconductor

Abstract

Keywords

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this