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

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

A broad superconducting transition with bulk T_c 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 T_c of 14 K, an electronic-term coefficient 7 of 12 mJ/mol K² and a Debye temperature θ_D of 320 K. The systematic variation of T_c 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(E_F) is believed to be the determining factors for T_c variation of these borocarbides.

Original language	English
Pages (from-to)	646-649
Number of pages	4
Journal	Chinese Journal of Physics
Volume	34
Issue number	2 II
Publication status	Published - 1996
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

Cite this

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title = "Superconducting and calorimetric properties of the metastable palladium borocarbide ThPd2B2C",

abstract = "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.",

author = "Jiang, {P. J.} and Hsu, {Y. Y.} and You, {Y. B.} and Ku, {H. G.} and Ho, {J. G.} and Lin, {S. H.} and Yao, {Y. D.} and Chen, {Y. Y.}",

year = "1996",

language = "English",

volume = "34",

pages = "646--649",

journal = "Chinese Journal of Physics",

issn = "0577-9073",

publisher = "Physical Society of the Republic of China",

number = "2 II",

}

TY - JOUR

T1 - Superconducting and calorimetric properties of the metastable palladium borocarbide ThPd2B2C

AU - Jiang, P. J.

AU - Hsu, Y. Y.

AU - You, Y. B.

AU - Ku, H. G.

AU - Ho, J. G.

AU - Lin, S. H.

AU - Yao, Y. D.

AU - Chen, Y. Y.

PY - 1996

Y1 - 1996

N2 - 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.

AB - 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.

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M3 - Article

AN - SCOPUS:21344450275

SN - 0577-9073

VL - 34

SP - 646

EP - 649

JO - Chinese Journal of Physics

JF - Chinese Journal of Physics

IS - 2 II

ER -

Superconducting and calorimetric properties of the metastable palladium borocarbide ThPd₂B₂C

Abstract

ASJC Scopus subject areas

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