Magnetic properties of isotropic SrFe12O19 fine particles prepared by mechanical alloying
作者： Zhiqiang Jin , Wei Tang , Jianrong Zhang , Hao Lin , Youwei Du
DOI: 10.1016/S0304-8853(97)00679-3
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摘要: Abstract M-type Sr-hexaferrites fine particles have been prepared by mechanical alloying. The influences of milling conditions on magnetic properties SrFe12O19 compounds systematically investigated. It can be found that annealing treatment at low temperature play similar role in structural transformation as compared with long time process. For those samples annealed about 750–800°C, it is clear saturation magnetization σs values are more sensitive to than coercivity Hc. maximum 74.8 emu/g and Hc 5.6 kOe obtained the isotropic powders 1000°C after for 30 h using high energy mill. With prolonged time, little changes observed short results properties. coercive field Hc, determined from demagnetization curve, corresponds pinning or nucleation field.
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