Magnetic field induced ferroelectricity and half magnetization plateau in polycrystalline R_2V_2O_74pt0ex(R=Ni,Co) - R. Chen, J. F. Wang, Z. W. Ouyang, Z. Z. He, S. M. Wang, L. Lin, J. M. Liu, C. L. Lu, Y. Liu, C. Dong, C. B. Liu, Z. C. Xia, A. Matsuo, Y. Kohama; K. Kindo (American Physical Society (APS), 2018)
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