期刊
JOURNAL OF APPLIED PHYSICS
卷 104, 期 6, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.2973202
关键词
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资金
- National High Technology Research and Development Program of China [2006AA03ZI01]
- NSFC [50502024, 50425721, 50621201, 50677029]
- Nova program of Beijing
Mn-doped BaTiO3 nanoparticles have been synthesized using a hydrothermal method. Phase composition, microstructure, and Raman spectroscopy analysis indicate that a double-phase structure containing both cubic and tetragonal structures can be obtained. Electron paramagnetic resonance and x-ray photoelectron spectroscopy measurements prove that Mn ions exist as a form of Mn 2, in these nanoparticles. Magnetization measurements reveal that a ferromagnetic behavior can be observed in the Mn-doped BaTiO3 at low temperature, and the nominal ratio of Ba/Ti has a great influence on the ferromagnetic properties. This ferromagnetic mechanism can be ascribed to the exchange coupling interaction between the Mn 2, ions and the Ti4+ vacancy. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2973202]
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