Novel Layered Supercell Structure from Bi2AlMnO6 for Multifunctionalities
Novel Layered Supercell Structure from Bi2AlMnO6 for Multifunctionalities
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DOI：
10.1021/acs.nanolett.7b02284
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发表时间：
2017-11-01
期刊：
影响因子：
10.8
通讯作者：
Wang, Haiyan
中科院分区：
文献类型：
--
作者：
Li, Leigang;Boullay, Philippe;Wang, Haiyan
分层材料，例如，石墨烯和过渡金属硫属化物在纳米器件应用中具有很大的前景，在基础化学、固态物理和材料研究领域已经得到了广泛的研究。平行地，层状氧化物（例如，Aurivillius和Ruddlesden-Popper相）由于其丰富的物理学和潜在的器件应用而呈现出一类有吸引力的材料。在本工作中，我们报道了一种新型的具有自组装层状超晶胞结构的层状氧化物材料，该材料由[Bi_3 O_3 + δ]和[MO_2]（1.84）（M = Al/Mn，简称BAMO）两个失配层状亚晶格组成，即，由三层厚的Bi-O板和一层厚的Al/Mn-O八面体板构成的两个互不公度的亚晶格在面外方向交替分层堆叠。该材料具有很强的室温铁磁和压电响应以及各向异性光学特性，在各种器件应用中具有巨大的潜力。在这项工作中，新型BAMO层状超晶胞结构的实现为探索和设计具有多功能的新材料铺平了道路。
Layered materials, e.g., graphene and transition metal (di)chalcogenides, holding great promises in nanoscale device applications have been extensively studied in fundamental chemistry, solid state physics and materials research areas. In parallel, layered oxides (e.g., Aurivillius and Ruddlesden-Popper phases) present an attractive class of materials both because of their rich physics behind and potential device applications. In this work, we report a novel layered oxide material with self-assembled layered supercell structure consisting of two mismatch-layered sublattices of [Bi3O3+delta] and [MO2](1.84) (M = Al/Mn, simply named BAMO), i.e., alternative layered stacking of two mutually incommensurate sublattices made of a three-layer-thick Bi-O slab and a one-layer-thick Al/Mn-O octhhedra slab in the out-of-plane direction. Strong room-temperature ferromagnetic and piezoelectric responses as well as anisotropic optical property have been demonstrated with great potentials in various device applications. The realization of the novel BAMO layered supercell structure in this work has paved an avenue toward exploring and designing new materials with multifunctionalities.