Enhanced magnetoelectric effect in La0.67Sr0.33MnO3/PbZr0.52Ti0.48O3 multiferroic nanocomposite films with a SrRuO3 buffer layer
Enhanced magnetoelectric effect in La0.67Sr0.33MnO3/PbZr0.52Ti0.48O3 multiferroic nanocomposite films with a SrRuO3 buffer layer
复制标题
DOI：
10.1063/1.4803057
复制
发表时间：
2013-04
影响因子：
3.2
通讯作者：
Z. Tang;M. Tang;X. Lv;H. Cai;Y. G. Xiao;C. P. Cheng;Y. Zhou;J. He
中科院分区：
文献类型：
--
作者：
Z. Tang;M. Tang;X. Lv;H. Cai;Y. G. Xiao;C. P. Cheng;Y. Zhou;J. He
采用脉冲激光沉积法在SrTiO 3衬底上沉积了La0.67Sr0.33MnO3/PbZr0.52Ti0.48O3（LSMO/PZT）外延薄膜。其晶体结构，表面形貌，和极化开关进行了研究，分别使用X射线衍射，扫描电子显微镜，和压电力显微镜测量。在室温下，LSMO/PZT双层膜的剩余极化强度（2 Pr）为62 μC/cm 2，饱和磁化强度为1.76emu/cm 3，磁电效应电压系数αME为202 mV/cm Oe和300 mV/cm Oe。结果表明，所制备的复合薄膜中存在电场和磁场的耦合效应。
Epitaxial thin films of La0.67Sr0.33MnO3/PbZr0.52Ti0.48O3 (LSMO/PZT) were deposited on SrTiO3 substrates with a SrRuO3 buffer layer by employing the pulsed laser deposition method. Its crystal structure, surface morphology, and polarization switching were investigated by using X-ray diffraction, scanning electron microscopy, and piezo-force microscopy measurements, respectively. Ferroelectric behavior along with a remnant polarization (2Pr) of 62 μC/cm2, a saturated magnetization of ∼76 emu/cm3, and a magnetoelectric effect voltage coefficient αME around 202 mV/cm Oe and 300 mV/cm Oe at 1 kHz were obtained successfully for the LSMO/PZT bilayers at room temperature. The result indicated that the coupling effects of electric and magnetic fields exist in the fabricated composite thin films.