Investigation of magnetic properties of Sr-3(Co,Zn)(2)Fe24O41 Z-type hexaferrites
Investigation of magnetic properties of Sr-3(Co,Zn)(2)Fe24O41 Z-type hexaferrites
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Sr-3(Co,Zn)(2)Fe24O41 Z型六角铁氧体磁性能研究
DOI：
10.1088/2053-1591/ab0d61
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发表时间：
2019
影响因子：
2.3
通讯作者：
Tang Rujun
中科院分区：
文献类型：
--
作者：
Shen Jian;Jiang Chen;Li Chaoyang;Tang Rujun
研究了Sr 3 Co 2− x Zn x Fe 24 O 41 (0≤x≤2)六方铁氧体粉末在不同温度下的磁性能。结果表明，增加Zn 2+ /Co 2+ 比率并未导致晶格常数和晶粒结构的显着变化。磁滞回线表明，随着Zn 2+ /Co 2+ 比值的增加，在一定的Zn 2+ /Co 2+ 比值下，两步磁化反转过程转变为三步磁化反转过程。而且，随着温度的升高，三步磁化反转过程变成四步，最后当温度达到350 K时又回到三步过程。一般来说，六方铁氧体的饱和磁化强度随着Zn 2+ 含量的增加而增加，但随着温度的升高而降低。 Sr 3 Co 2 Fe 24 O 41 和Sr 3 Zn 2 Fe 24 O 41 的矫顽力最低。用Zn 2+ 部分取代Co 2+ 导致矫顽力增加。
The magnetic properties of Sr 3 Co 2− x Zn x Fe 24 O 41 (0≤ x≤ 2) hexaferrite powders were investigated at different temperatures. The Results indicate that increasing Zn 2+/Co 2+ ratio has not led to significant changes in both lattice constant and grain structure. The hysteresis loops show that with an increase of Zn 2+/Co 2+ ratio, the two-step magnetization reversal process turns into three-step reversal process at certain Zn 2+/Co 2+ ratio. Moreover, with increasing temperature, the three-step magnetization reversal process turns into four-step and finally returns to three-step process when temperature reaches 350 K. In general, the saturation magnetization of the hexaferrite increases with higher percentage of Zn 2+, but decreases when temperature rises. The coercivity is lowest for Sr 3 Co 2 Fe 24 O 41 and Sr 3 Zn 2 Fe 24 O 41. A partial substitution of Co 2+ with Zn 2+ leads to an increase in coercivity.