Magnetic and Electron Spin Resonance Properties of Ba x Sr 2- x TiCoO 6 Double Perovskites
Abstract
Herein, the magnetic behavior of BaxSr2-xTiCoO6 (BSTC) double perovskites synthesized by the conventional solid-state reaction route is investigated. To understand the complexity of B-site cations and their distribution in different valance states, X-ray photoelectron spectroscopy (XPS) is performed. To understand the magnetic interactions at lower temperatures, variation of magnetization in both zero-field-cooled and field-cooled conditions is studied in the temperature range from 2 to 300 K. Temperature dependence of inverse susceptibility is explained by modified Curie-Weiss law. Weak ferromagnetic and antiferromagnetic interactions are found in BSTC compounds, causing the randomness and frustrations and leading to a spin-glass-like behavior. To gain further insights, electron spin resonance (ESR) measurements are also carried out in BSTC ceramics. ESR measurement suggests the occurrence of Jahn-Teller glass analogous to the spin-glass behavior in BSTC ceramics.
- Publication:
-
Physica Status Solidi B Basic Research
- Pub Date:
- May 2020
- DOI:
- 10.1002/pssb.201900341
- Bibcode:
- 2020PSSBR.25700341S