Superconducting and calorimetric properties of the metastable palladium borocarbide ThPd2B2C

P. J. Jiang*, Y. Y. Hsu, Y. B. You, H. G. Ku, J. G. Ho, S. H. Lin, Y. D. Yao, Y. Y. Chen

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

A broad superconducting transition with bulk Tc of 14 K and a diamagnetic onset as high as 20 K was observed for the metastable, as-melted ThPd2B2C sample from magnetic studies. Low temperature specific heat data yield a bulk Tc of 14 K, an electronic-term coefficient 7 of 12 mJ/mol K2 and a Debye temperature θD of 320 K. The systematic variation of Tc for the nonmagnetic quaternary borocarbides RT2B2C (R = Sc, Y, Lu, La, Th; T = Ni, Pd, Pt) is correlated with the electronic-term coefficient γ and the transition metal T-T nearest-neighbor in-plane distance. The variation of the transitional metal 3d/4d/5d-dominated conduction band and thus the Fermi-level density of states N(EF) is believed to be the determining factors for Tc variation of these borocarbides.

原文英語
頁(從 - 到)646-649
頁數4
期刊Chinese Journal of Physics
34
發行號2 II
出版狀態已發佈 - 1996
對外發佈

ASJC Scopus subject areas

  • 物理與天文學 (全部)

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