Magnetic and magneto-optic characterization of the ternary compounds (Nd0.33Eu0.33Gd0.33)Ba2Cu3 Oy,(Sm0.33Eu0.33Gd0.33)Ba2CU 3Oy and (Nd0.33Sm0.33Gd0.33) Ba2Cu3Oy

A. Das; M. R. Koblischka; N. Sakai; M. Muralidhar; S. Koishikawa; T. Fukuzaki; S. J. Seo; M. Murakami

doi:10.1088/0953-2048/11/11/015

Magnetic and magneto-optic characterization of the ternary compounds (Nd_0.33Eu_0.33Gd_0.33)Ba₂Cu₃ O_y,(Sm_0.33Eu_0.33Gd_0.33)Ba₂CU ₃O_y and (Nd_0.33Sm_0.33Gd_0.33) Ba₂Cu₃O_y

A. Das, M. R. Koblischka, N. Sakai, M. Muralidhar, S. Koishikawa, T. Fukuzaki, S. J. Seo, M. Murakami

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

6 Citations (Scopus)

Abstract

We have investigated the ternary compound superconductors (Nd_0.33Eu_0.33Gd_0.33)Ba₂Cu ₃O_y (NEG), (Sm_0.33Eu_0.33Gd_0.33)Ba₂Cu ₃O_y (SEG) and (Nd_0.33Sm_0.33Gd_0.33)Ba₂Cu ₃O_y (NSG) melt-processed in a reduced oxygen atmosphere with magnetic and magneto-optical measurements. Zero-field-cooled and field-cooled measurements were carried out in order to correlate the flux distributions with microstructure analysis. It was found that the critical state is well established in all three samples. The J_c(B) curves derived from magnetization loops exhibit a strongly developed secondary peak effect. Scaling of normalized J_c as a function of reduced field, b = B/B_pk, was performed. At 77 K and above, it was found that NSG and SEG samples have similar properties, which are different from those of the NEG sample. The current-carrying length scale was determined from the reverse leg of the magnetization hysteresis loops and was compared with the actual dimensions of the sample.

Original language	English
Pages (from-to)	1283-1291
Number of pages	9
Journal	Superconductor Science and Technology
Volume	11
Issue number	11
DOIs	https://doi.org/10.1088/0953-2048/11/11/015
Publication status	Published - 1998 Nov
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/11/11/015

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Das, A., Koblischka, M. R., Sakai, N., Muralidhar, M., Koishikawa, S., Fukuzaki, T., Seo, S. J., & Murakami, M. (1998). Magnetic and magneto-optic characterization of the ternary compounds (Nd_0.33Eu_0.33Gd_0.33)Ba₂Cu₃ O_y,(Sm_0.33Eu_0.33Gd_0.33)Ba₂CU ₃O_y and (Nd_0.33Sm_0.33Gd_0.33) Ba₂Cu₃O_y. Superconductor Science and Technology, 11(11), 1283-1291. https://doi.org/10.1088/0953-2048/11/11/015

Das, A, Koblischka, MR, Sakai, N , Muralidhar, M, Koishikawa, S, Fukuzaki, T, Seo, SJ & Murakami, M 1998, 'Magnetic and magneto-optic characterization of the ternary compounds (Nd_0.33Eu_0.33Gd_0.33)Ba₂Cu₃ O_y,(Sm_0.33Eu_0.33Gd_0.33)Ba₂CU ₃O_y and (Nd_0.33Sm_0.33Gd_0.33) Ba₂Cu₃O_y', Superconductor Science and Technology, vol. 11, no. 11, pp. 1283-1291. https://doi.org/10.1088/0953-2048/11/11/015

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abstract = "We have investigated the ternary compound superconductors (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy (NEG), (Sm0.33Eu0.33Gd0.33)Ba2Cu 3Oy (SEG) and (Nd0.33Sm0.33Gd0.33)Ba2Cu 3Oy (NSG) melt-processed in a reduced oxygen atmosphere with magnetic and magneto-optical measurements. Zero-field-cooled and field-cooled measurements were carried out in order to correlate the flux distributions with microstructure analysis. It was found that the critical state is well established in all three samples. The Jc(B) curves derived from magnetization loops exhibit a strongly developed secondary peak effect. Scaling of normalized Jc as a function of reduced field, b = B/Bpk, was performed. At 77 K and above, it was found that NSG and SEG samples have similar properties, which are different from those of the NEG sample. The current-carrying length scale was determined from the reverse leg of the magnetization hysteresis loops and was compared with the actual dimensions of the sample.",

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T1 - Magnetic and magneto-optic characterization of the ternary compounds (Nd0.33Eu0.33Gd0.33)Ba2Cu3 Oy,(Sm0.33Eu0.33Gd0.33)Ba2CU 3Oy and (Nd0.33Sm0.33Gd0.33) Ba2Cu3Oy

AU - Das, A.

AU - Koblischka, M. R.

AU - Sakai, N.

AU - Muralidhar, M.

AU - Koishikawa, S.

AU - Fukuzaki, T.

AU - Seo, S. J.

AU - Murakami, M.

PY - 1998/11

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N2 - We have investigated the ternary compound superconductors (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy (NEG), (Sm0.33Eu0.33Gd0.33)Ba2Cu 3Oy (SEG) and (Nd0.33Sm0.33Gd0.33)Ba2Cu 3Oy (NSG) melt-processed in a reduced oxygen atmosphere with magnetic and magneto-optical measurements. Zero-field-cooled and field-cooled measurements were carried out in order to correlate the flux distributions with microstructure analysis. It was found that the critical state is well established in all three samples. The Jc(B) curves derived from magnetization loops exhibit a strongly developed secondary peak effect. Scaling of normalized Jc as a function of reduced field, b = B/Bpk, was performed. At 77 K and above, it was found that NSG and SEG samples have similar properties, which are different from those of the NEG sample. The current-carrying length scale was determined from the reverse leg of the magnetization hysteresis loops and was compared with the actual dimensions of the sample.

AB - We have investigated the ternary compound superconductors (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy (NEG), (Sm0.33Eu0.33Gd0.33)Ba2Cu 3Oy (SEG) and (Nd0.33Sm0.33Gd0.33)Ba2Cu 3Oy (NSG) melt-processed in a reduced oxygen atmosphere with magnetic and magneto-optical measurements. Zero-field-cooled and field-cooled measurements were carried out in order to correlate the flux distributions with microstructure analysis. It was found that the critical state is well established in all three samples. The Jc(B) curves derived from magnetization loops exhibit a strongly developed secondary peak effect. Scaling of normalized Jc as a function of reduced field, b = B/Bpk, was performed. At 77 K and above, it was found that NSG and SEG samples have similar properties, which are different from those of the NEG sample. The current-carrying length scale was determined from the reverse leg of the magnetization hysteresis loops and was compared with the actual dimensions of the sample.

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Magnetic and magneto-optic characterization of the ternary compounds (Nd_0.33Eu_0.33Gd_0.33)Ba₂Cu₃ O_y,(Sm_0.33Eu_0.33Gd_0.33)Ba₂CU ₃O_y and (Nd_0.33Sm_0.33Gd_0.33) Ba₂Cu₃O_y

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