University of Wollongong
Browse

Superconducting transition width under magnetic field in MgB2 polycrystalline samples

Download (283.37 kB)
journal contribution
posted on 2024-11-16, 08:16 authored by CC Wang, Rong Zeng, Xun XuXun Xu, Shi DouShi Dou
A systematic study on the superconducting transition width as a function of the applied magnetic field was performed in polycrystalline MgB2. A quantitative, yet universal relation between the two parameters was observed in all of the ceramics. It was found that the width decreases linearly with decreasing field in pure MgB2 samples. Whereas, samples with boron and/or Mg atoms partially replaced by other elements show this linear relation in the temperature range below 0.7–0.8 of the superconducting transition temperature (corresponding to a field of about 2 T), at temperatures higher than this range, an abnormal upturn in the width was found. This upturn is ascribed to multiple superconducting transitions. A core-shell model is proposed to describe the multiple transitions. © 2010 American Institute of Physics. Link to publishers version here

Funding

Giant Magnetocaloric Materials and Room Temperature Refrigeration

Australian Research Council

Find out more...

Current limiting mechanisms in magnesium diboride superconductors

Australian Research Council

Find out more...

History

Citation

Wang, C., Zeng, R., Xu, X. & Dou, S. X. (2010). Superconducting transition width under magnetic field in MgB2 polycrystalline samples. Journal of Applied Physics, 108 (9), 093907-1-093907-5.

Journal title

Journal of Applied Physics

Volume

108

Issue

9

Language

English

RIS ID

34679

Usage metrics

    Categories

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC