Room-temperature ferromagnetism in Fe-doped PbTiO3 nanocrystals
作者： Zhaohui Ren , Gang Xu , Xiao Wei , Yong Liu , Xiaohong Hou
DOI: 10.1063/1.2766839
关键词: Paramagnetism 、 Nanocrystal 、 Ferromagnetism 、 Vacancy defect 、 Magnetism 、 Condensed matter physics 、 Exchange interaction 、 Doping 、 Diamagnetism 、 Materials science
摘要: Room-temperature ferromagnetism has been observed in Fe-doped PbTiO3 nanocrystals. The magnetism of the nanocrystals develops from diamagnetism to and paramagnetism on increasing nominal Fe doping concentration 0to4mol%. Transmission electron microscope (TEM) high-resolution TEM data indicate that with size ∼100nm are organized form a planarlike self-assembly via oriented aggregation. These assembled nanostructures effectively improve room-temperature sample. exchange interaction ferric ions an trapped bridging oxygen vacancy (F center) is employed explain
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