Magnetic impurity effect in Pd-doped Ni3Al

S. Takahashi, A. Y. Takahashi, A. Chiba

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11 Citations (Scopus)

Abstract

Isothermal magnetization curves of Ni77-xAl23Pd x (0<or=x<or=3) intermetallic compound have been measured in the temperature range between 4.5 K and 110 K. The temperature dependence of spontaneous magnetization, Ms(T), has been analysed according to the self-consistent renormalization theory of spin fluctuations. The qualitative agreement between the experimental result and the theoretical one is satisfactory. The value of Curie temperature, TC as well as M s(0) does not vary significantly with the Ni concentration, though it varies remarkably in the Ni75+xAl25-x system. Pd impurity atoms occupy the Ni site and the Ni atoms expelled by the Pd atoms reside on the Al site. The expelled Ni atoms give the same magnetic effect as the excess Ni atoms in the off-stoichiometric binary compound. The values of TC and Ms(0) depend on the number of Ni atoms on the Al site, as well as on the Ni site, and the former is predominant.

Original languageEnglish
Article number018
Pages (from-to)6011-6018
Number of pages8
JournalJournal of Physics: Condensed Matter
Volume6
Issue number30
DOIs
Publication statusPublished - 1994 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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