UV-Irradiation-Enhanced Ferromagnetism in BaTiO3
The Journal of Physical Chemistry Letters2009Vol. 1(1), pp. 238–241
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Abstract
Defect-induced ferromagnetism in nanoparticles has recently attracted extensive attention. We report here that (111) twinned BaTiO3 crystallites synthesized through a modified hydrothermal method can exhibit ferromagnetic properties. The unexpected ferromagnetism is verified to originate from the point defects. We also find that UV irradiation can significantly enhance the ferromagnetism through creating more lattice defects. The photochromic effect is also observed and discussed.
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