期刊
MATERIALS LETTERS
卷 175, 期 -, 页码 207-211出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.04.016
关键词
Ceramics; Sol-gel preparation; Magnetic materials; Ferroelectrics; Multiferroic materials; Bismuth ferrite
资金
- National Natural Science Foundation of China [51102007, 51402005]
- Ministry of Finance
- Ministry of Education of PRC
Mg-substituted BiFeO3 (BFO) multiferroic nanoparticles were synthesized by a facile sol-gel route and their magnetic and ferroelectric properties were investigated. Due to Mg2+ ion substitution, the magnetization is dramatically increased and higher than the other A-site substituted BFO reported with similar doping level. Such strong magnetization improvement originates from the release of latent magnetization locked within the cycloid, which is caused by the substitution of small-radius Mg2+ ion at the edge of the perovskite-structure tolerance factor. Compared to the pristine BFO, the as-doped Bi0.98Mg0.02FeO3 exhibits five-fold improved magnetization with simultaneously improved ferroelectric properties at room temperature. Increased magnetic and ferroelectric properties suggest the doped BFO possesses great potential for data storage and magnetoelectric devices. (c) 2016 Elsevier B.V. All rights reserved.
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