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Title: Pinning enhancement and critical current densities in (Sm{sub 0.5}Y{sub 0.5})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} superconductor

Abstract

A fabrication method of homogeneous (Sm{sub o.5}Y{sub 0.5})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} superconductor substituted Y with Sm has been developed using zone melting process. A sample prepared by this method showed well textured microstructure and (Sm{sub 0.5}Y{sub 0.5}){sub 2}BaCuO{sub 5} particles were uniformly dispersed in large (Sm{sub 0.5}Y{sub 0.5})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} grain. The sample showed a sharp superconducting transition at 90.3 K. The magnetization measurements of the (Sm{sub 0.5}Y{sub 0.5})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} sample exhibited the enhanced flux pinning compared with YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} samples without Sm. Critical current densities of (Sm{sub 0.5}Y{sub 0.5})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} was 1.8 x 10{sup 4} A/cm{sup 2} at 10 kOe and 77 K.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Korea Research Inst. of Standards and Science, Yusong, Taejon (KR)
OSTI Identifier:
20000844
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt2; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; HIGH-TC SUPERCONDUCTORS; YTTRIUM OXIDES; SAMARIUM OXIDES; BARIUM OXIDES; COPPER OXIDES; CRITICAL CURRENT; CURRENT DENSITY; MAGNETIC FLUX; MICROSTRUCTURE; TRANSITION TEMPERATURE; ZONE MELTING

Citation Formats

Lee, K.W., Kim, J.T., Ha, D.H., Park, Y.K., Park, J.C., Kim, S.J., and Kim, H.G. Pinning enhancement and critical current densities in (Sm{sub 0.5}Y{sub 0.5})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} superconductor. United States: N. p., 1999. Web.
Lee, K.W., Kim, J.T., Ha, D.H., Park, Y.K., Park, J.C., Kim, S.J., & Kim, H.G. Pinning enhancement and critical current densities in (Sm{sub 0.5}Y{sub 0.5})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} superconductor. United States.
Lee, K.W., Kim, J.T., Ha, D.H., Park, Y.K., Park, J.C., Kim, S.J., and Kim, H.G. Wed . "Pinning enhancement and critical current densities in (Sm{sub 0.5}Y{sub 0.5})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} superconductor". United States.
@article{osti_20000844,
title = {Pinning enhancement and critical current densities in (Sm{sub 0.5}Y{sub 0.5})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} superconductor},
author = {Lee, K.W. and Kim, J.T. and Ha, D.H. and Park, Y.K. and Park, J.C. and Kim, S.J. and Kim, H.G.},
abstractNote = {A fabrication method of homogeneous (Sm{sub o.5}Y{sub 0.5})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} superconductor substituted Y with Sm has been developed using zone melting process. A sample prepared by this method showed well textured microstructure and (Sm{sub 0.5}Y{sub 0.5}){sub 2}BaCuO{sub 5} particles were uniformly dispersed in large (Sm{sub 0.5}Y{sub 0.5})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} grain. The sample showed a sharp superconducting transition at 90.3 K. The magnetization measurements of the (Sm{sub 0.5}Y{sub 0.5})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} sample exhibited the enhanced flux pinning compared with YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} samples without Sm. Critical current densities of (Sm{sub 0.5}Y{sub 0.5})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} was 1.8 x 10{sup 4} A/cm{sup 2} at 10 kOe and 77 K.},
doi = {},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt2,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}