Ferroelastic domain engineering in layered-perovskite Bi_(2)WO_(6) thin films by post-annealing  

作　　者：Jia Yang Minchuan Liang Huayu Yang Hui Ai Tong Zhang Qing Han Ji Ma Houbing Huang Jing Wang 

机构地区：[1]Advanced Research Institute of Multidisciplinary Science and School of Materials Science and Engineering Beijing Institute of Technology,Beijing 100081,P.R.China [2]Analysis&Testing Center,Beijing Institute of Technology Beijing 100081,P.R.China [3]School of Material Science and Engineering Kunming University of Science and Technology Kunming,Yunnan 650093,P.R.China

出　　处：《Journal of Advanced Dielectrics》2024年第2期71-76,共6页先进电介质学报（英文）

基　　金：supported by the NSF of China(Grant No.12004036);State Key Laboratory of New Ceramic and Fine Processing Tsinghua University(No.KFZD202201).

摘　　要：Due to the strong magneto-elastic coupling in ferromagnetic/ferroelectric heterostructures and the potential applications in lowpower magnetoelectric nanodevices,ferroelastic domains and the corresponding dynamic evolution under external stimuli have attracted intense research interest.Using pulsed laser deposition method,we have successfully grown layered-perovskite Bi_(2)WO_(6)thin films on SrTiO_(3)(001)substrates.Interestingly,for the as-grown thin films with step-flow morphology,the relationship between ferroelastic domain number and size shows a normal distribution,which is similar to the Boltzman distribution for confined gas molecules at equilibrium.In addition,with post-annealing,the thin films with as-grown island-like morphology can be optimized for layered morphology,and the initial small ferroelastic domains can grow into large domains.This study provides an effective strategy for ferroelastic domain engineering,which can be applied for the design of multiferroic heterostructures and low-power nanodevices.

关 键 词：Aurivillius oxides Bi_(2)WO_(6) thin films domain structure Boltzman distribution POST-ANNEALING 

分 类 号：TM27[一般工业技术—材料科学与工程]