文献类型：期刊文献

英文题名：The nanoscale control of disorder-to-order layer-stacking boosts multiferroic responses in an Aurivillius-type layered oxide

作者：Sun, Shujie[1,2];Li, Yuan[1];Yin, Xiaofeng[1];Liu, Changhui[3];Li, Xiaoning[4];Ti, Ruixia[5];Fang, Liang[1];Zhang, Tianfu[1];Peng, Ranran[2];Lu, Yalin[2]

第一作者：Sun, Shujie

通讯作者：Sun, SJ[1];Sun, SJ[2]

机构：[1]Xinyang Normal Univ, Collaborat Innovat Ctr Henan Prov Energy Saving B, Xinyang 464000, Peoples R China;[2]Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China;[3]Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117585, Singapore;[4]Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2500, Australia;[5]Xinxiang Univ, Coll Phys & Elect Engn, Xinxiang 453003, Henan, Peoples R China

第一机构：Xinyang Normal Univ, Collaborat Innovat Ctr Henan Prov Energy Saving B, Xinyang 464000, Peoples R China

通讯机构：[1]corresponding author), Xinyang Normal Univ, Collaborat Innovat Ctr Henan Prov Energy Saving B, Xinyang 464000, Peoples R China;[2]corresponding author), Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China.

年份：2021

卷号：9

期号：14

起止页码：4825-4837

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY C

收录：;EI(收录号：20211610225364);Scopus(收录号：2-s2.0-85104185690);WOS:【SCI-EXPANDED(收录号:WOS:000633047000001)】；

基金：This work was supported by the Key Project of Henan Province Colleges and Universities Plan (No. 18A140030 and 19A430021) and the Key Technologies R&D Program of Henan Province (No. 212102210184); S. S. acknowledges support from the Nanhu Scholars Program for Young Scholars of XYNU.

语种：英文

外文关键词：Bismuth compounds - Ferromagnetic materials - Ferromagnetism - Molecular biology - Nanotechnology - Perovskite

摘要：The manipulation of layer-stacked interfaces inside layered perovskite oxide structures can lead to collective phenomena and extraordinary functionalities, originating from local structural distortions near correlated interfaces and the broken inversion symmetry of periodically repeating layer cells. In this work, the nanoscale control of disorder-to-order layer stacking was achieved in an Aurivillius-type layered oxide, with the structure of a basic perovskite motif sandwiched between Bi-O layers, through simple stoichiometric ratio control or ion substitution at A- and/or B-sites. Tunable layer structure evolution from a disordered mixed-layer structure composed of 4-layer and 5-layer phases to a homogeneous layer structure was clearly observed via utilizing X-ray diffraction and Raman techniques. Such layer structure modulation induces variable mixed-layer interfaces and special OPB defects, which generate perturbations in local order parameters, such as polarization and strain, thus giving rise to enhanced ferroelectric and magnetic properties, anomalous magnetic behavior, and magnetodielectric effects. More importantly, the use of minor La and Co co-doping in phase-modulated materials can generate much larger magnetic coercive fields, reaching similar to 20 kOe at 50-100 K, arising from strong interactions between the anti-ferromagnetic matrix and short-range ferromagnetic clusters. Our findings offer a route to the rational fabrication of functional layered perovskites and shed new light on the design of single-phase multiferroics, with the potential for feature-rich applications.