Title

Superior MgB(2) superconducting wire performance through oxygen-free pyrene additive

RIS ID

49476

Publication Details

Maeda, M., Kim, J., Heo, Y., Kumakura, H., Choi, S., Nakayama, Y. & Dou, S. Xue. (2012). Superior MgB(2) superconducting wire performance through oxygen-free pyrene additive. Applied Physics Express, 5 (1), 13101-1-13101-3.

Abstract

"There is great potential to further enhance the critical current density (J(c)) performance of MgB(2) wires. Herein, MgB(2) wires were fabricated by using oxygen-free pyrene as dopant, and field and temperature dependences of J(c) were systematically evaluated. In addition, a strong correlation among sintering temperature, structural parameters, microstructure, and superconducting performance was established. High lattice distortion was obtained by using pyrene as an additive as well as by using a low-temperature sintering process. This arises from vacancy formation, as confirmed by first-principles calculations. The microscopic defects introduce impurity scattering, resulting in the enhancement of the irreversibility field and J(c). (C) 2012 The Japan Society of Applied Physics"

Grant Number

ARC/DP0770205

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