Change of magnetic properties with heat treatments in rapidly quenched Cu99.2Fe0.8 alloys

I. Okamoto, T. Miyazaki, M. Takahashi

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1 Citation (Scopus)

Abstract

The change of ac susceptibility χi and dc magnetization σ with heat-treatments are studied at various temperatures in rapidly quenched Cu99.2Fe0.8 alloy in the temperature range between 4.2 and 300 K. When the heat-treatments temperature TA is below 600 K, no change of these magnetic properties are observed. With increasing TA, χi and σ at 4.2 K increase and the transition temperature from paramagnetic to spin-glass which is observed clearly in the as-quenched state is not observed above 4.2 K. Further, if TA is raised above 700 K χi and σ decreases and exhibit a minimum at TA≈850 K, where paramagnetic Curie temperature also exhibits a minimum of about -100 K. Above 850 K precipitation of α-Fe and γ-Fe are confirmed by the magnetization measurement and electron microscopy observation, respectively. Based on the data of magnetic properties, the growth of magnetic clusters with heat-treatment are discussed.

Original languageEnglish
Pages (from-to)267-274
Number of pages8
JournalPhysica Status Solidi (A) Applied Research
Volume99
Issue number1
Publication statusPublished - 1987 Jan

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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