Magnetic properties of natural chalcopyrite at low temperature

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Abstract

Magnetic susceptibilities of natural chalcopyrite from Cu ore deposits in Oman have been measured at temperatures between 77 and 450 K and magnetic field strengths between 6 and 9 kOe. The results show typical antiferromagnetism from 450 down to 190 K, where a magnetic phase transition is observed. Below the transition temperature, spontaneous magnetizations deduced from magnetic susceptibilities versus fields are extrapolated to 0 K to give a weak saturation magnetization of 0.015±0.001 emu g-1. This value could be explained by Cu moments having a paramagnetic arrangement down to 190 K and then ordering magnetically at lower temperatures.

Original languageEnglish
Pages (from-to)349-353
Number of pages5
JournalMaterials Letters
Volume46
Issue number6
DOIs
Publication statusPublished - Dec 2000

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ASJC Scopus subject areas

  • Materials Science(all)

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