论文标题
pfn-pt/cofe $ _ {2-x} $ zn $ _x $ o $ $ _4 $散装颗粒复合材料中的复杂磁电效应
Complex magnetoelectric effect in PFN-PT/CoFe$_{2-x}$Zn$_x$O$_4$ bulk particulate composites
论文作者
论文摘要
颗粒，电介质，磁性和磁性（Me）的颗粒物复合材料的特性（ME）含有铁二甲甲酸铅和铅钛酸盐0.94 [pbfe $ _ {0.5} $ _ {0.5} $ nb $ _ {0.5} 0.5} $ _ {0.5}和Zn取代的钴铁含量磁磁体cofe $ _ {2-x} $ zn $ _ {x} $ o $ $ _4 $（cf $ _ {2-x} $ _ {2-x} $ z $ _ {x} $ _ {x} $ o）; 0.6（pfn-pt）/0.4（cf $ _ {2-x} $ z $ _ {x} $ o），x = 0，0.025，0.1，0.2，0.3（比为60 wt \％的铁电极和40 wt \％ferrite的比率为60 wt \％\％。已经调查了。我们使用动态压电系数，$ q^{ac} $ = $ = $ \partialλ^{ac} {ac}/{\ partial h} $，研究了所有复合样品的ME电压系数。结果表明，调整磁刻相阶段对ME电压系数的实际部分具有很强的影响。将锌掺入钴铁素体中，修饰了磁相的磁特性，例如磁各向异性和强制场，因此修饰了ME性质。最高的ME系数值为12.33 $ \ frac {mv} {cm。在755 OE的磁场上获得X = 0.1的OE} $。此外，观察到ME系数最大值的磁场（$ H_ {peak} $）在很大程度上取决于Zn替代的值。使用CF $ _ {2-x} $ z $ _ {x} $ o磁带的磁场依赖性解释了结果。
The structural, dielectric, magnetic, and magnetoelectric (ME) properties of particulate composites containing lead-iron niobate and lead titanate piezoelectric 0.94[PbFe$_{0.5}$Nb$_{0.5}$O$_3$]-0.06[PbTi$_{0.5}$O$_3$] (PFN-PT) and Zn-substituted cobalt ferrite magnetostrictive CoFe$_{2-x}$Zn$_{x}$O$_4$ (CF$_{2-x}$Z$_{x}$O); 0.6(PFN-PT)/0.4(CF$_{2-x}$Z$_{x}$O), x=0, 0.025, 0.1, 0.2, 0.3 (with ratio of 60 Wt\% ferroelectric and 40 Wt\% ferrite); have been investigated. We investigated the ME voltage coefficient as a complex quantity for all composite samples using the dynamic piezomagnetic coefficient, $q^{ac}$=$\partial λ^{ac}/{\partial H}$. The results reveal that tuning the magnetostrictive phase has a strong effect on the real part of the ME voltage coefficient. Doping zinc into cobalt ferrite modified the magnetic properties of the magnetic phase, such as magnetic anisotropy and coercive field, and hence the ME properties. The highest ME coefficient value of 12.33 $\frac{mV}{cm. Oe}$ was obtained for x=0.1 at the magnetic field of 755 Oe. In addition, the magnetic field at which the maximum value of the ME coefficient was observed ($H_{peak}$) strongly depends on the value of Zn substitution. The results were interpreted using the magnetic field dependence of the CF$_{2-x}$Z$_{x}$O magnetostriction.
