Subdomain size superparamagnetic particles of Mn-Zn ferrites, having a narrow particle size distribution (peaked around 10 nm) were prepared under mild hydrothermal conditions. High densities (≳99.5%) have been obtained upon sintering these green ferrite powders at relatively low temperatures (∼1000 °C), without the use of any sintering aids. Permeability spectra and other magnetic and electrical properties of the sintered ferrites were studied.
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Pannaparayil et al. (1991) studied this question.
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