Magnetic Mesocrystal-Assisted Magnetoresistance in Manganite
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- 作者：Jan-Chi Yang ; Qing He ; Yuan-Min Zhu ; Jheng-Cyuan Lin ; Heng-Jui Liu ; Ying-Hui Hsieh ; Ping-Chun Wu ; Yen-Lin Chen ; Shang-Fan Lee ; Yi-Ying Chin ; Hong-Ji Lin ; Chien-Te Chen ; Qian Zhan ; Elke Arenholz ; Ying-Hao Chu
- 刊名：Nano Letters
- 出版年：2014
- 出版时间：November 12, 2014
- 年：2014
- 卷：14
- 期：11
- 页码：6073-6079
- 全文大小：574K
- ISSN：1530-6992
文摘
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.