期刊
PHYSICAL REVIEW LETTERS
卷 101, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.067201
关键词
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资金
- U. S. Office of Naval Research [N00014-05-1-0349]
- National Science Foundation [DMR-0400676]
- China National Science Foundation [60601001]
- Ministry of Education [NCET-06-0219]
- U. S. National Science Foundation [DMR-0213282]
Using a novel alternating target laser ablation deposition technique, Mn cations were placed in specific interstitial sites of BaFe12O19 thin films as opposed to being distributed throughout the unit cell as in conventional bulk materials. The distribution of Mn cations has been confirmed experimentally and predicted theoretically. As a result of site selection, the saturation magnetization increased 12%-22%, and the Neel temperature increased by 40-60 K compared to bulk materials. This technique implies a new methodology to design and process a new generation of ferrite, oxide, and alloy materials.
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