Higher-Harmonic Susceptibilities of (La1-xCax)(Ba1.75-xLa0.25+x)Cu3O7+δ Prepared by the Amorphous Metal-Complex Method

Ai Yamaguchi; Shinjiro Tochihara; Takahiro Katsumata; Yoshihiro Uragami; Hiroshi Yasuoka; Hiromasa Mazaki; Minoru Osada; Hiroshi Fujiki; Masato Kakihana

doi:10.2497/jjspm.47.1111

Higher-Harmonic Susceptibilities of (La_1-xCa_x)(Ba_1.75-xLa_0.25+x)Cu₃O_7+δ Prepared by the Amorphous Metal-Complex Method

Ai Yamaguchi, Shinjiro Tochihara, Takahiro Katsumata, Yoshihiro Uragami, Hiroshi Yasuoka, Hiromasa Mazaki, Minoru Osada, Hiroshi Fujiki, Masato Kakihana

Author information

Ai Yamaguchi
Dept. Math. and Phys., National Defense Academy
Shinjiro Tochihara
Dept. Math. and Phys., National Defense Academy
Takahiro Katsumata
Dept. Math. and Phys., National Defense Academy
Yoshihiro Uragami
Dept. Math. and Phys., National Defense Academy
Hiroshi Yasuoka
Dept. Math. and Phys., National Defense Academy
Hiromasa Mazaki
Dept. Math. and Phys., National Defense Academy
Minoru Osada
The Institute of Physical and Chemical Research(RIKEN)
Hiroshi Fujiki
Research Lab. of Engineering Materials, Tokyo Institute of Technology
Masato Kakihana
Research Lab. of Engineering Materials, Tokyo Institute of Technology

Keywords: higher-harmonic susceptibility, critical-state model, pinning force, critical current density, (La_1-xCa_x)(Ba_1.75-xLa_0.25+x)Cu₃O_7+δ

JOURNAL OPEN ACCESS

2000 Volume 47 Issue 10 Pages 1111-1115

DOI https://doi.org/10.2497/jjspm.47.1111

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Abstract

We measured the temperature dependence of the 2nd, 3rd and 5th higher-harmonic susceptibilities of(La_1-xCa_x)(Ba_1.75-xLa_0.25+x)Cu₃O_7+δ, x=0.2, 0.4, 0.5, prepared by the amorphous metal-complex method. We attempted to fit the calculations based on the Kim-Anderson critical-state model to the experimental results of χ_n. The analysis shows that the pinning force density is enhanced with increasingχ.

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