Multiferroic properties of novel lead-free KNN-LT/20NZCFO magneto-electric composites
Multiferroic properties of novel lead-free KNN-LT/20NZCFO magneto-electric composites
复制标题
DOI：
10.1016/j.matlet.2018.09.001
复制
发表时间：
2018-12
影响因子：
3
通讯作者：
M. D. Chermahini;M. Shahraki;M. Kazazi
中科院分区：
文献类型：
--
作者：
M. D. Chermahini;M. Shahraki;M. Kazazi
采用传统烧结工艺成功制备了以0.95Na_（0.52）K_（0.48）Nb_（03 - 0.05）LaTiO_3（KNN-LT）为铁电基体、以20 vol% Ni_（0.2）Zn_（0.3）Co_（0.5）Fe_2 O_4（NZCFO）为铁磁增强体的新型多铁性复合材料。在X射线衍射谱中，可以清楚地观察到铁电相KNN-LT和铁磁相NZCFO的特征峰，没有任何杂质相。在纯铁电体和复合材料中，KNN基压电陶瓷都具有正交对称性。在FESEM图像中，特征性的立方KNN-LT相和规则的多边形晶粒的NZCFO铁氧体的形貌表明，成功的烧结过程中的多铁性复合材料。KNN-LT/NZCFO复合材料的铁电（P-E回线）和铁磁（M-H曲线）行为表明，该复合材料是一种新型的无铅多铁性复合材料。该磁电复合材料的Ps值为1.9 μC/cm ~ 2，Ms值为1.4 emu/g。
Novel multiferroic composites of 0.95Na0.52K0.48Nb03-0.05LaTiO3(KNN-LT) as ferroelectric matrix and 20 vol% Ni0.2Zn0.3Co0.5Fe2O4(NZCFO) as ferromagnetic reinforcement successfully prepared by a conventional sintering process. In X-ray spectra, both the characteristics peaks of ferroelectric KNN-LT and ferromagnetic NZCFO phases without any impurity phase were clearly observed. Both in pure ferroelectric and composite samples the orthorhombic symmetry of KNN based piezoceramic was detected. In FESEM images, the characteristic cube-like morphology of KNN-LT phase and regular polygonal grains of NZCFO ferrite indicates the successful sintering process of multiferroic composites. The simultaneous ferroelectric (based on P-E loop) and ferromagnetic (according to M-H curve) behaviors of KNN-LT/NZCFO approves that this composite can be known as a novel lead free multiferroic composite. The excellent values of Ps ∼ 9 µC/cm2and Ms ∼ 14 emu/g for this magnetoelectric composite were obtained.