Fine Powders of Co-Mn Cation Deficient Spinel Ferrites for Magneto-Optical Pigments
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چکیده
منابع مشابه
Thin Films and Fine Powders of Ferrites : Materials for Magneto-Optical Recording Media
In the near future, the magneto-optical (MO) recording will require materials having high MO effects at short wavelengths (400-500 nm). Fenites, especially garnets, but also spinel ferrites have highly advantageous MO properties in this spectrum and also have very stable structural and chemical properties. The present paper evaluates their used as MO media, in comparison with the rare-earth tra...
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When highly divided spinel fenites become reactive enough with oxygen, to allow the oxidation of the Fe ions at low temperature and of substitute cations too, when these cations are capable of different valence states. We prepared fine particles of spinel ferrites substituted by Mn, Mo, Cu, by "chimie douce", especially from oxalate precursors and used them to reveal and to study the oxido-redu...
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