In situ processed MgB2 conductors: Core densification due to mechanical deformation

Authors

Jung Ho Kim, University of WollongongFollow
Minoru Maeda, University of WollongongFollow
Yue Zhao, University of WollongongFollow
Dongqi Shi, University of WollongongFollow
S X. Dou, University of WollongongFollow
Seyong Choi, National Institute for Materials Science, Japan
T Kiyoshi, National Institute for Materials Science, Japan

RIS ID

24512

Publication Details

Kim, J, Maeda, M, Zhao, Y, Shi, D, Dou, SX, Choi, S & Kiyoshi, T (2008), In situ processed MgB2 conductors: Core densification due to mechanical deformation, Physica C: Superconductivity and its Applications, 468, pp. 1813-1816.

Abstract

We studied the effects of wire and tape shapes of in situ processed MgB₂ on the critical current density (J_c), flux pinning strength, and microstructures. All samples were sintered in the temperature range of 650 degrees C-700 degrees C for 30 min. We observed that the two types of samples sintered at lower temperature, ~650 degrees C, had a relatively good high-field J_c at 4.2 K and 12 T. This can be attributed to the strong grain boundary pinning due to smaller grain size. Specifically, flat tape samples are expected to further improve the self-field J_c properties and grain connectivity due to core densification and reduction of porosity.

Grant Number

ARC/DP0770205

Additional Grant Number

http://purl.org/au-research/grants/ARC/DP0770205