标题: Magnetic Mesocrystal-Assisted Magnetoresistance in Manganite
作者: Yang, Jan-Chi
He, Qing
Zhu, Yuan-Min
Lin, Jheng-Cyuan
Liu, Heng-Jui
Hsieh, Ying-Hui
Wu, Ping-Chun
Chen, Yen-Lin
Lee, Shang-Fan
Chin, Yi-Ying
Lin, Hong-Ji
Chen, Chien-Te
Zhan, Qian
Arenholz, Elke
Chu, Ying-Hao
材料科学与工程学系
电子物理学系
Department of Materials Science and Engineering
Department of Electrophysics
关键字: mesocrystal;self-assembled;nanocomposite;colossal magnetoresistance;complex oxide;nanocrystal
公开日期: 1-十一月-2014
摘要: Mesocrystal, a new class of crystals as compared to conventional and well-known single crystals and polycrystalline systems, has captured significant attention in the past decade. Recent studies have been focused on the advance of synthesis mechanisms as well as the potential on device applications. In order to create further opportunities upon functional mesocrystals, we fabricated a self-assembled nanocomposite composed of magnetic CoFe2O4 mesocrystal in Sr-doped manganites. This combination exhibits intriguing structural and magnetic tunabilities. Furthermore, the antiferromagnetic coupling of the mesocrystal and matrix has induced an additional magnetic perturbation to spin-polarized electrons, resulting in a significantly enhanced magnetoresistance in the nanocomposite. Our work demonstrates a new thought toward the enhancement of intrinsic functionalities assisted by mesocrystals and advanced design of novel mesocrystal-embedded nanocomposites.
URI: http://dx.doi.org/10.1021/n15019172
http://hdl.handle.net/11536/124141
ISSN: 1530-6984
DOI: 10.1021/n15019172
期刊: NANO LETTERS
Volume: 14
Issue: 11
起始页: 6073
结束页: 6079
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