Engineering of multiferroic BiFeO grain boundaries with head-to-head polarization configurations

作     者：Mingqiang Li Shuzhen Yang Ruochen Shi Linglong Li Ruixue Zhu Xiaomei Li Yang Cheng Xiumei Ma Jingmin Zhang Kaihui Liu Pu Yu Peng Gao 李明强;杨树圳;时若晨;李玲龙;朱瑞雪;李晓梅;程阳;马秀梅;张敬民;刘开辉;于浦;高鹏

作者机构：Electron Microscopy LaboratorySchool of PhysicsPeking UniversityBeijing 100871China International Center for Quantum MaterialsSchool of PhysicsPeking UniversityBeijing 100871China Academy for Advanced Interdisciplinary StudiesPeking UniversityBeijing 100871China Peking University Shenzhen Graduate SchoolPeking UniversityShenzhen 518055China TCL China Star Optoelectronics Technology Co.Ltd.Shenzhen 518132China Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China State Key Laboratory for Mesoscopic PhysicsSchool of PhysicsPeking UniversityBeijing 100871China Collaborative Innovation Centre of Quantum MatterBeijing 100871China State Key Laboratory of Low Dimensional Quantum Physics and Department of PhysicsTsinghua UniversityBeijing 100084China. 

基　　金：supported by the National Basic Research Program of China(2016YFA0300804) the National Natural Science Foundation of China(51672007 and 11974023) Key Area R&D Program of Guangdong Province(2018B010109009) the Key R&D Program of Guangdong Province(2018B030327001) National Equipment Program of China(ZDYZ2015-1) the‘‘2011 Program”Peking-Tsinghua-IOP Collaborative Innovation Centre for Quantum Matter supported by the National Basic Research Program of China(2016YFA0301004) the National Natural Science Foundation of China(51872155,52025024) the Beijing Advanced Innovation Center for Future Chip(ICFC) 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2021年第66卷第8期

页      码：771-776,M0003页

摘      要：Confined low dimensional charges with high density such as two-dimensional electron gas(2 DEG)at interfaces and charged domain walls in ferroelectrics show great potential to serve as functional elements in future ***,stabilization and control of low dimensional charges is challenging,as they are usually subject to enormous depolarization ***,we demonstrate a method to fabricate tunable charged interfaces with~77°,86°and 94°head-to-head polarization configurations in multiferroic Bi Fe O_(3) thin films by grain boundary *** adjacent grains are cohesively bonded and the boundary is about 1 nm in width and devoid of any amorphous ***,the polarization remains almost unchanged near the grain boundaries,indicating the polarization charges are well compensated,i.e.,there should be two-dimensional charge gas confined at grain *** the tilt angle of the grain boundaries enables tuning the angle of polarization configurations from 71°to 109°,which in turn allows the control of charge density at the grain *** general and feasible method opens new doors for the application of charged interfaces in next generation nanoelectronics.

主 题 词：Head-to-head Grain boundaries Atomic structure BiFeO_(3) 

学科分类：080801[080801] 0808[工学-自动化类] 07[理学] 070205[070205] 08[工学] 080501[080501] 0805[工学-能源动力学] 080502[080502] 0702[理学-物理学类] 

核心收录：

D　O　I：10.1016/j.scib.2020.12.032

馆 藏 号：203102149...