Improved magnetic and magnetoelectric properties in BaFe12O19 nanostructures

被引：27
|
作者：
Xu, Xingyu [1 ,2 ]
Huang, Fengzhen [1 ,2 ,3 ]
Shao, Ye [1 ,2 ]
Zhou, Min [1 ,2 ]
Ren, Xianming [1 ,2 ]
Lu, Xiaomei [1 ,2 ,3 ]
Zhu, Jinsong [1 ,2 ,3 ]
机构：
[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
[2] Nanjing Univ, Sch Phys, Nanjing 210093, Jiangsu, Peoples R China
[3] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2017年 / 19卷 / 27期
基金：
中国国家自然科学基金;
关键词：
BARIUM FERRITE BAFE12O19; HEXAFERRITE NANOPARTICLES; DIELECTRIC-PROPERTIES; HEXAGONAL FERRITES; CRYSTAL-STRUCTURE; CERAMICS; TEMPERATURE; SRFE12O19; IRON; DIFFRACTION;
D O I：
10.1039/c7cp02276j
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The structural, magnetic and magnetoelectric properties were investigated for sol-gel prepared BaFe12O19 nanorods and plate-like nanoparticles. Based on comparative experiments with bulk ceramics, it is found that larger structural distortion is present in nanostructures, which could cause the enhancement of magnetocrystalline anisotropy and the off-center displacement of Fe3+ ions, and thus result in improved magnetic and magnetoelectric properties in BaFe12O19 plate-like nanoparticles. Meanwhile, the local (Fe2+-Fe3+) dipoles, which usually appear during a high temperature sintering process, can also contribute to the negative magnetoelectric effect of BaFe12O19 nanorods and a large room temperature magnetodielectric coefficient of about -13% is observed at 10(4) Hz and 9 kOe.
引用
收藏
页码：18023 / 18029
页数：7
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