纳米铋铁氧体的制备、结构与磁性

材料科学与工程学报, 2000, 18(z2): 593-596. doi: 10.3969/j.issn.1673-2812.2000.z2.014

纳米铋铁氧体的制备、结构与磁性

何海英 ^1, , 吕丰美 ^2, , 段迎文 ^3, , 李建功 ^4,

1.兰州大学材料科学系,兰州,730000

2.兰州大学材料科学系,兰州,730000

3.兰州大学材料科学系,兰州,730000

4.兰州大学材料科学系,兰州,730000

关键词： BiFeO3 , 纳米微粒 , sol-gel法 , 反铁磁 , 弱铁磁

采用sol-gel法,以柠檬酸为络合剂,PEG为分散剂,首次合成纯净单相菱方钙钛矿型BiFeO3纳米微粒.磁测量显示其具有反铁磁结构的弱铁磁性,随温度升高弱铁磁性显著降低.本文还讨论了磁性与纳米结构的关系.

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