Magnetic and electrical properties of iron-nickel-chromium-metalloid glasses

H. Sadate-Akhavi, G. Hadjipanayis, D. J. Sellmyer

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

The magnetic and electrical properties of amorphous (Fe1-xNix)78- yCrySi10B12 alloys have been measured between 4.2 and 300 K. Alloys with x0.9 and y=5 order ferromagnetically. High-field magnetization measurements show saturation in moderate fields suggesting a relatively high value of magnetic anisotropy which was estimated to be K106 erg/cm3. The magnetization at low temperatures follows a T32 law leading to a spin-wave stiffness coefficient D90 meV 2. The x=1, y=5 alloy behaves like a "cluster glass" with a cluster ordering temperature around 20 K. Resistivity measurements show minima at low temperatures which can be explained with a modified Kondo mechanism. The resistivity maximum which appears around the cluster ordering temperature in Ni73Cr5Si10B12 is associated with a spin freeze-out of the Kondo effect due to local moments on Cr atoms.

Original languageEnglish (US)
Pages (from-to)5318-5326
Number of pages9
JournalPhysical Review B
Volume24
Issue number9
DOIs
StatePublished - 1981

ASJC Scopus subject areas

  • Condensed Matter Physics

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