ゾルゲル法によるLa, MnドープBaTiO_3微粒子の合成
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概要
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Amorphous BaTiO3 fine particles containing La and Mn were synthesized by the sol-gel method starting from an aqueous solution. The morphology and the phase change by thermal treatment of the formed particles and magnetic properties of the thermal-treated particles have been investigated by TEM, SAED, DSC and XRD.BaTiO3 fine particles containing La were amorphous, monodispersely spherical and they crystallized at 800°C. La was doped into BaTiO3 crystal. Crystalline BaTiO3 fine particles doped La and Mn could be produced by firing particles of the La doped BaTiO3 coated with manganese(III) acetylacetonate at 1100°C. The magnetic properties of the La and Mn doped BaTiO3 fine particles exhibited a paramagnetic behavior.
- 社団法人粉体粉末冶金協会の論文
- 2006-01-15
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