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2 Materials Science Poland

2 2009

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Room-temperature ferromagnetism in Fe-doped Na0.5Bi0.5TiO3 crystals

Wang Y., Xu G., Yang L., Ren Z., Wei X., Weng W., Du P., Shen G., Shen G., Han G.

Materials Science Poland

2009

Vol. 27, No. 2

471--476

Fe-doped Na0.5Bi0.5TiO3 crystals were synthesized and studied by X-ray diffraction, X-ray spectroscopy, scanning electron microscopy, high-resolution transmission electron microscopy, and magnetic property measurement system. Room-temperature ferromagnetism was observed in Fe-doped Na0.5Bi0.5TiO3 crystals. It was found that the magnetism of Na0.5Bi0.5TiO3crystals can be controlled by the Fe dopant concentration. The magnetism of the Fe-doped Na0.5Bi0.5TiO3 crystals develops from diamagnetism to ferromagnetism and paramagnetism on increasing the Fe doping concentration from 0 to 10 mol %. The results presented in this study may provide new insights to the problem of synthesizing more single-phase multiferroic materials which will hopefully lead to rich and fascinating fundamental physics.

Enhancement of ferromagnetic properties in Ni-doped BiFeO3

Wang Y., Xu G., Yang L., Ren Z., Wei X., Weng W., Du P., Shen G., Han G

Materials Science Poland

2009

Vol. 27, No. 1

219--224

Ni-doped BiFeO3 samples were successfully synthesized by a hydrothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), and energy dispersive X-ray spectroscopy (EDS). It was found that the magnetization can be controlled by the Ni doping concentration. The magnetization of Ni-doped BiFeO3 was greatly enhanced when the Ni doping concentration was 0.5%. Therefore, it would be interesting to fabricate thin films with similar composition and study their properties with the aim of identifying new device applications.