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標題: Coexistence of superconductivity and magnetic ordering in the Y1-xRExNi2B2C (RE=Gd, Dy, Ho, Er) system
作者: Lan, M.D.
Chang, T.J.
Liaw, C.S.
關鍵字: intermetallic compounds;magnetic materials;superconductors;superconductivity;crystal
Project: Journal of Physics and Chemistry of Solids
期刊/報告no:: Journal of Physics and Chemistry of Solids, Volume 59, Issue 8, Page(s) 1285-1292.
The magnetic and superconducting properties of the intermetallic compounds Y1-xRExNi2B2C (RE = Gd, Dy, Ho, Pr; 0 less than or equal to x less than or equal to 1.0) have been measured over wide temperature and magnetic field ranges. The existence of the RE3+ paramagnetic ions causes the depression of superconductivity, which can be well interpreted by the Abrikosov-Gor'kov magnetic pair-breaking theory. The corresponding magnetic-ordering temperature increases with increasing magnetic moment concentration while the superconducting transition temperature decreases. The long-range magnetic-ordering is mainly caused by the Ruderman-Kittel-Kasuya-Yosida indirect exchange interaction via conduction electrons. This indirect exchange coupling strongly depends on the RE3(+)-moment separation and de Gennes factor. This experiment demonstrates that coexistence of long-range magnetic-ordering and superconductivity in Y1-xRExNi2B2C compounds is possible. (C) 1998 Elsevier Science Ltd. All rights reserved.
ISSN: 0022-3697
DOI: 10.1016/s0022-3697(98)00039-0
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