Synthesis and physical properties study of polar oxides HoMWO6 (M=Cr,Fe).

Polar oxides are an important system to study due to their technologically relevant properties such as ferroelectricity, multiferroicity, piezoelectricity, magnetoelectricity. Recently, RFeWO6 (R=Dy, Y, Tb, Eu) type polar oxides were synthesized and type-II multiferroic property was reported [1]. We have extended this series and successfully synthesized HoCrWO6 and HoFeWO6 in polar structures [2]. We have also studied the crystal and magnetic structure of these compounds. We will present the synthesis method and compare/contrast the magnetic properties and magnetic structures of these isostructural compounds to investigate the role of transition metal ions.
[1] Ghara, Somnath, et al. "Ordered aeschynite-type polar magnets R FeW O 6 (R= Dy, Eu, Tb, and Y): A new family of type-II multiferroics." Physical Review B 95.22 (2017): 224416.
[2] Dhital, C., D. Pham, T. Lawal, C. Bucholz, A. Poyraz, Q. Zhang, R. Nepal, R. Jin, and R. Rai. "Crystal and magnetic structure of polar oxide HoCrWO6." Journal of Magnetism and Magnetic Materials 514 (2020): 1