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

Journal Article


Abstract


  • We studied the effects of wire and tape shapes of in situ processed MgB2 on the critical current density (Jc), flux pinning strength, and microstructures. All samples were sintered in the temperature range of 650 ºC-700 ºC for 30 min. We observed that the two types of samples sintered at lower temperature, ~650 ºC, had a relatively good high-field Jc 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 Jc properties and grain connectivity due to core densification and reduction of porosity.

Publication Date


  • 2008

Citation


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

Scopus Eid


  • 2-s2.0-50349088465

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/108

Number Of Pages


  • 3

Start Page


  • 1813

End Page


  • 1816

Volume


  • 468

Place Of Publication


  • www.elsevier.com/locate/physc

Abstract


  • We studied the effects of wire and tape shapes of in situ processed MgB2 on the critical current density (Jc), flux pinning strength, and microstructures. All samples were sintered in the temperature range of 650 ºC-700 ºC for 30 min. We observed that the two types of samples sintered at lower temperature, ~650 ºC, had a relatively good high-field Jc 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 Jc properties and grain connectivity due to core densification and reduction of porosity.

Publication Date


  • 2008

Citation


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

Scopus Eid


  • 2-s2.0-50349088465

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/108

Number Of Pages


  • 3

Start Page


  • 1813

End Page


  • 1816

Volume


  • 468

Place Of Publication


  • www.elsevier.com/locate/physc