Nature of vortex pinning in the MgB2 superconductor

Kijoon H.P. Kim; Mun-Seog Kim; C. U. Jung; Min-Seok Park; Won Nam Kang; Sung-Ik Lee

doi:10.1117/12.452280

7 November 2002 Nature of vortex pinning in the MgB₂ superconductor

Kijoon H.P. Kim, Mun-Seog Kim, C. U. Jung, Min-Seok Park, Won Nam Kang, Sung-Ik Lee

Proceedings Volume 4811, Superconducting and Related Oxides: Physics and Nanoengineering V; (2002) https://doi.org/10.1117/12.452280
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

The magnetic-field dependence of the irreversible magnetization of the binary superconductor MgB₂ was measured. For most of the temperature region below T_c, bulk pinning dominated surface pinning, thus, the magnetization curves, M(H), were well described by the critical-state model. Moreover, the M(H) curves at various temperatures scaled when the field and the magnetization were properly normalized. The universal scaling of the magnetization indicated that the pinning was uniquely determined at temperatures below T=T_c.

Citation Download Citation

Kijoon H.P. Kim, Mun-Seog Kim, C. U. Jung, Min-Seok Park, Won Nam Kang, and Sung-Ik Lee "Nature of vortex pinning in the MgB₂ superconductor", Proc. SPIE 4811, Superconducting and Related Oxides: Physics and Nanoengineering V, (7 November 2002); https://doi.org/10.1117/12.452280

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