Chemical Homogeneity of Nanocrystalline Zn–Mn Spinel Ferrites Obtained by High-Energy Ball Milling
✍ Scribed by D. Arcos; R. Valenzuela; M. Vázquez; M. Vallet-Regı́
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 445 KB
- Volume
- 141
- Category
- Article
- ISSN
- 0022-4596
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✦ Synopsis
Nanocrystalline Zn-Mn spinel ferrites have been obtained by high-energy ball milling from precursor oxides and carbonates (1) and hydroxides and oxides (2). From the measurement of initial magnetic permeability as a function of temperature, differences in chemical homogeneity have been observed. Structural and Curie point data reveal that dissolution of Mn 2 ؉ into the spinel structure is assisted by the presence of a hydroxide and an acid oxide. For fixed milling conditions, the influence of precursors leads to different chemical, structural, and magnetic properties in ferrites obtained by mechanochemical synthesis.