Magnetic and dielectric properties of Yb(Mn_1-xAl_x)O₃ thin films

Abstract

Hexagonal RMnO(3) is known as one of the candidates for multiferroic materials. We have focused on YbMnO(3), which has ferroelectricity along the c axis below 1000 K and antiferromagnetic ordering below 80 K. We have reported that magnetic, field-induced ferromagnetism in YbMnO(3) epitaxial thin films. In this study, we investigate the substitutional effect of the nonmagnetic element, Al, for Mn ions with triangular spin ordering on the ferroelectric and magnetic properties of YbMnO(3).

Spin–phonon coupling in multiferroic YbMnO3studied by Raman scattering

“…We prepared YbMn 1−x Al x O 3 bulk polycrystals with x =0, 0.05, 0.10 and 0.15 by a conventional ceramic process [13]: Yb 2 O 3 , Mn 2 O 3 and Al 2 O 3 powders were mixed and calcined at 1473 K. Then, the powders were smashed with a ball mill. The fine powders were pressed by one axis pressing and cold isotropic press methods.…”