[15a-D215-1~9] 9.1 Dielectrics, ferroelectrics

△ [15a-D215-4] Antiferroic-to-ferroic phase transitions in spin and charge of hexagonal TbFeO₃ film

〇Yaoming Liu¹, Chen Binjie¹, Ohta Hiromichi², Katayama Tsukasa^2,3 (1.IST-Hokkaidou Univ., 2.RIES-Hokkaido Univ., 3.JST-PRESTO)

Keywords:multi-ferroic, ferroelectricity, ferromagnetism

Rare-earth iron oxides (RFeO₃) are known as multiferroic materials. In contrast to the most stable orthorhombic (o-) perovskite structure, showing the ferroelectricity only below a few K, metastable hexagonal (h-) RFeO₃ shows spontaneous ferroelectric polarization even at room temperature [1]. The ferroelectric and magnetic properties of h-RFeO₃ highly depend on the ionic radius of R³⁺. Ferroelectric properties of h-RFeO₃ with R³⁺ = Dy³⁺−Lu³⁺ have been studied thus far. In this study, we studied multiferroic properties of h-TbFeO₃ film, in order to clarify the effect of smaller R³⁺ than that of Dy³⁺−Lu³⁺.