Superconductivity in the heusler alloy Pd2YbPb


Oner Y. , KAMER O. , ALVEROGLU E. , ACET A., KRENKE T.

JOURNAL OF ALLOYS AND COMPOUNDS, cilt.429, ss.64-71, 2007 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 429
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.jallcom.2006.04.027
  • Dergi Adı: JOURNAL OF ALLOYS AND COMPOUNDS
  • Sayfa Sayıları: ss.64-71

Özet

Magnetization and resistivity measurements have been carried out on the Hensler alloy Pd2YbPb in the temperature range 2-300 K. Both low-field dc susceptibility and resistivity show that this material undergoes a superconducting transition at 2.85 K. The presence of superconductivity was also confirmed by the Meissner effect observed at temperatures below 3 K. The temperature dependence of the susceptibility and resistivity have been accounted for on the basis of a crystal electric field with a Gamma(7) ground state. Both measurements suggest that the energy splitting between a Gamma(7) doublet and Gamma(8) quartet, the first excited state, is about 65 K. However, the energy splitting between Gamma(7) and Gamma(6) (a doublet at highest energy) deduced from the resistivity data is 165 K, while the susceptibility data yield 355 K. We ascribed this discrepancy to the poor fitting quality of susceptibility at higher temperatures. We compare the results with those published in the literature for the isoelectronic Hensler compound Pd2YbSn. (c) 2006 Elsevier B.V. All rights reserved.