Magnetic properties of γ-Fe2O3 small particles prepared by spray pyrolysis
作者： A López , FJ Lázaro , T González-Carreño , MP Morales , CJ Serna
DOI: 10.1016/0304-8853(94)00793-4
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摘要: Abstract Small particles of γ-Fe2O3 synthesized by spray pyrolysis have been studied ac susceptibility. They are made out nanometric crystallites resulting in dense and hollow spherical aggregates. The results show the transition from superparamagnetic to blocked state. anisotropy magnetic moment per aggregate less than for single same dimensions.
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