@article{SisLab1807,
          volume = {156},
           month = {October},
           title = {Room-temperature ferromagnetism in Fe-doped wide band gap ferroelectric Bi0.5K0.5TiO3 nanocrystals},
          author = {Duc Dung Dang and Van Thiet Duong and Odkhuuc Dorj and Viet Cuong Le and Hoang Tuan Nguyen and Cho Sunglae},
            year = {2015},
           pages = {129--133},
         journal = {Materials Letters},
             url = {https://eprints.uet.vnu.edu.vn/eprints/id/eprint/1807/},
        abstract = {We reported the room-temperature ferromagnetism in iron doped Bi0.5K0.5TiO3 nanocrystals. The reduction of band gap from 3.31 eV to 2.27 eV was obtained after introduction of iron to Bi0.5K0.5TiO3 with concentration up to 7 mol\%. The first-principles density function theory (DFT) calculations indicate that the reduction of band gap is due to the presence of conduction bands of iron, and the ferromagnetism in iron-doped Bi0.5K0.5TiO3 samples was explained by the exchange splitting between spin subbands through crystal field theory. This method may provide an available way to get single-phase multiferroics and resolve the problem of the scarcity of single-phase multiferroics in nature.}
}