Selective synthesis on structures and morphologies of BixFeyOz nanomaterials with disparate magnetism through time control
Selective synthesis on structures and morphologies of BixFeyOz nanomaterials with disparate magnetism through time control
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DOI：
10.1016/j.jallcom.2009.08.022
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发表时间：
2009-11
影响因子：
6.2
通讯作者：
Yijun Chen;Qingsheng Wu;Qingsheng Wu;J. Zhao
中科院分区：
文献类型：
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作者：
Yijun Chen;Qingsheng Wu;Qingsheng Wu;J. Zhao
The rhombohedral distorted perovskite-structure BiFeO3crystals and body-center cubic sillenite-structure Bi25FeO40crystals were selectively synthesized through the modulation of reaction time via hydrothermal method at a mild temperature of 160°C, directly utilizing bulk phase materials of Fe(NO3)3and Bi(NO3)3as reagents without any surfactants. The BiFeO3sample consists of walnut-like microspheres with big holes on the surface. These microspheres are constructed by unordered flakes in a radiation pattern. The BiFeO3sample displays weak ferromagnetic property at room temperature and the ferroelectric Curie temperature is determined to be 829°C. While the Bi25FeO40sample is composed of nanobundles and exhibits paramagnetic property.
