Tang Yu, Wang Ruixin, Zhang Yi, Xiao Bin, Li Shun, Du Piyi
Department of Materials Science and Engineering, College of Aerospace Science and Engineering, National University of Defense Technology Changsha 410073 China.
State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 China
RSC Adv. 2019 Jul 1;9(35):20345-20355. doi: 10.1039/c9ra03291f. eCollection 2019 Jun 25.
Novel 1-3 type multiferroic composite thin films were prepared a simple 0-3 composite fabrication process. The orientation of the NiZnFeO (NZFO) nanocrystals in the BaTiO-NiZnFeO (BTO-NZFO) composite thin films was controlled by magnetron sputtering, and the controlling effect of such orientation on magnetoelectric coupling was investigated in detail. The NZFO lattice in the BTO-NZFO composite thin films grew with (100) orientation under the induction of the (111) plane of Si. The transfer of substrate stress between the closely contacted grains also contributes to the orientation of the NZFO nanocrystals. The 0.6BTO-0.4(100)NZFO multiferroic composite thin film exhibited a magnetization strength of 9.2% at the Curie point of the BTO phase, showing extremely strong magnetoelectric coupling characteristics. This work provides an effective strategy for the development of high-performance multiferroic composites, and brings about new conception of realizing strong magnetoelectric coupling effect from the perspective of physical chemistry.
通过一种简单的0-3复合制备工艺制备了新型1-3型多铁性复合薄膜。通过磁控溅射控制了BaTiO-NiZnFeO（BTO-NZFO）复合薄膜中NiZnFeO（NZFO）纳米晶体的取向，并详细研究了这种取向对磁电耦合的控制作用。在Si的（111）面诱导下，BTO-NZFO复合薄膜中的NZFO晶格以（100）取向生长。紧密接触的晶粒之间的衬底应力传递也有助于NZFO纳米晶体的取向。0.6BTO-0.4(100)NZFO多铁性复合薄膜在BTO相的居里点处表现出9.2%的磁化强度，显示出极强的磁电耦合特性。这项工作为高性能多铁性复合材料的开发提供了一种有效策略，并从物理化学角度带来了实现强磁电耦合效应的新观念。
