Microstructures of the melt-powder-melt-growth processed YBaCuO

K. Yamaguchi; M. Murakami; H. Fujimoto; S. Gotoh; T. Oyama; Y. Shiohara; N. Koshizuka; S. Tanaka

doi:10.1557/JMR.1991.1404

Microstructures of the melt-powder-melt-growth processed YBaCuO

K. Yamaguchi, M. Murakami, H. Fujimoto, S. Gotoh, T. Oyama, Y. Shiohara, N. Koshizuka, S. Tanaka

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

66 Citations (Scopus)

Abstract

Microstructures of two MPMG processed YBaCuO materials with and without Y2BaCu05 (211) inclusions were investigated by transmission electron microscopy. Using the MPMG process, it is possible to change the quantity of the 211 inclusions in the YBa2Cu307 (123) matrix. We prepared two YBaCuO samples with 0 and 30 vol. % 211 and with respective critical current density values of 2000 and 30000 A/cm2 at 77 K and 1 T (magnetic field parallel to the c-axis). As possible pinning centers, we found stacking faults in the 123 matrix. However, we observed no appreciable change in their number and structure by introducing the 211 inclusions. Therefore, the difference in Jcvalues can be attributed to the 211 inclusion itself.

Original language	English
Pages (from-to)	1404-1407
Number of pages	4
Journal	Journal of Materials Research
Volume	6
Issue number	7
DOIs	https://doi.org/10.1557/JMR.1991.1404
Publication status	Published - 1991 Jul
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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abstract = "Microstructures of two MPMG processed YBaCuO materials with and without Y2BaCu05 (211) inclusions were investigated by transmission electron microscopy. Using the MPMG process, it is possible to change the quantity of the 211 inclusions in the YBa2Cu307 (123) matrix. We prepared two YBaCuO samples with 0 and 30 vol. % 211 and with respective critical current density values of 2000 and 30000 A/cm2 at 77 K and 1 T (magnetic field parallel to the c-axis). As possible pinning centers, we found stacking faults in the 123 matrix. However, we observed no appreciable change in their number and structure by introducing the 211 inclusions. Therefore, the difference in Jcvalues can be attributed to the 211 inclusion itself.",

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AU - Yamaguchi, K.

AU - Murakami, M.

AU - Fujimoto, H.

AU - Gotoh, S.

AU - Oyama, T.

AU - Shiohara, Y.

AU - Koshizuka, N.

AU - Tanaka, S.

PY - 1991/7

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AB - Microstructures of two MPMG processed YBaCuO materials with and without Y2BaCu05 (211) inclusions were investigated by transmission electron microscopy. Using the MPMG process, it is possible to change the quantity of the 211 inclusions in the YBa2Cu307 (123) matrix. We prepared two YBaCuO samples with 0 and 30 vol. % 211 and with respective critical current density values of 2000 and 30000 A/cm2 at 77 K and 1 T (magnetic field parallel to the c-axis). As possible pinning centers, we found stacking faults in the 123 matrix. However, we observed no appreciable change in their number and structure by introducing the 211 inclusions. Therefore, the difference in Jcvalues can be attributed to the 211 inclusion itself.

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