Dielectric and magnetic properties of holmium and ytterbium titanates
A. S. Bogolubskiy1, A. S. Klepikova1, A. B. Rinkevich1, V. N. Neverov1, O. V. Nemytova1, M. S. Koroleva2, I. V. Piir2, and D. V. Perov1
1M. N. Miheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences Ekaterinburg 620108, Russia
2Institute of Chemistry of the Ural Branch of the Russian Academy of Sciences, Syktyvkar 167000, Russia
Received September 15, 2020, published online November 24, 2020
Ytterbium and holmium titanates have been synthesized and their dielectric and magnetic properties have been investigated. The frequency dependences of the permittivity at T = 77 and 300 K, and measured magnetization curves and temperature dependences of the magnetic susceptibility in fields up to 30 kOe and at temperatures from 2 K to 50 K have been obtained. The properties of the doped and undoped titanates have been compared. Based on the temperature dependences of the magnetic susceptibility, the magnetic dipole and exchange couplings in the titanates have been analyzed.
Key words: rare-earth titanates, pyrochlore structure, magnetic susceptibility, permittivity.