Magnetic Properties of W-Type Hexaferrite Powders
Magnetic Properties of W-Type Hexaferrite Powders
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W型六角铁氧体粉末的磁性能
DOI：
10.1143/jjap.24.51
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
K. Gotō
中科院分区：
文献类型：
--
作者：
H. Kojima;C. Miyakawa;Takafumi Sato;K. Gotō
研究了W型六角铁氧体AM_2Fe_（16）O_（27）（A=Ba或Sr，M= Fe ~（2+），Zn+Cu，Zn+Cd，Zn+Mg）的制备条件和磁性能。在PO 2/（PO 2 + PN 2）=10 ~（-2）× 10 ~（-6）或空气中，将碳酸盐和氧化物按合适的摩尔比混合，在1200 ~ 1400^°C下焙烧，得到纯W相。沿着c轴取向的氧化物粉末的σs=70 ~ 79 emu/g，Hc=400 ~ 2000 Oe，σr/σs = 0.90，Tc=350 ~ 500^°C。
An investigation was undertaken to elucidate the preparation conditions and magnetic properties of W-type hexaferrite powders with the formula AM2Fe16O27 (A=Ba or Sr, M=Fe2+, Zn+Cu, Zn+Cd, Zn+Mg). A pure W-phase was formed by firing a mixture of carbonates and oxides in the appropriate molar ratio at 1200^° ∼1400^°C in an atmosphere of PO2 /(PO2 +PN2 )=10-2 ∼10-6 or in air. The values σs=70 ∼79 emu/g, Hc=400 ∼2000 Oe, σr/σs ∼0.90 and Tc=350^° ∼500^°C were obtained for the oxide powders, aligned along the c axis.