Superior MgB(2) superconducting wire performance through oxygen-free pyrene additive
RIS ID
49476
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
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.