Effects of oxygen content on the superconducting properties of melt-textured LRE123 superconductors

N. Chikumoto; S. Ozawa; S. I. Yoo; N. Hayashi; M. Murakami

doi:10.1016/S0921-4534(97)00115-9

Effects of oxygen content on the superconducting properties of melt-textured LRE123 superconductors

N. Chikumoto, S. Ozawa, S. I. Yoo, N. Hayashi, M. Murakami

Research output: Contribution to journal › Article

26 Citations (Scopus)

Abstract

The effects of oxygen content on the superconducting transition temperatures, T_c, and magnetic properties of melt-textured LRE123 (LRE = Nd, Sm) superconductors were studied. The oxygen content could be varied by changing the annealing temperature, T_a, in that the oxygen deficiency, δ, monotonically decreased with decreasing the T_a from 600°C to 300°C. A further decrease of T_a to 275°C showed no appreciable change. In both systems the highest T_c was obtained for the samples annealed at 300°C. Magnetic properties were also strongly dependent on the oxygen content, showing that the control of oxygen content is critical for achieving good pinning properties.

Original language	English
Pages (from-to)	187-191
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	278
Issue number	3-4
DOIs	https://doi.org/10.1016/S0921-4534(97)00115-9
Publication status	Published - 1997 May 1

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Keywords

Critical current density
Irreversibility field
LRE123
Melt-processing
Oxygen deficiency
Peak effect

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Cite this

Chikumoto, N., Ozawa, S., Yoo, S. I., Hayashi, N., & Murakami, M. (1997). Effects of oxygen content on the superconducting properties of melt-textured LRE123 superconductors. Physica C: Superconductivity and its applications, 278(3-4), 187-191. https://doi.org/10.1016/S0921-4534(97)00115-9

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10.1016/S0921-4534(97)00115-9