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Magnetic and Electron Spin Resonance Properties of Ba x Sr 2– x TiCoO 6 Double Perovskites
Author(s) -
Sri Gyan Deepankar,
Saxena Mandvi,
Eremina Rushana,
Fazlizhanov Ilshat,
Mamedov Dzhavid,
Yatsyk Ivan,
Shukla Ashutosh Kumar,
Dwivedi Akansha,
Maiti Tanmoy
Publication year - 2020
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201900341
Subject(s) - antiferromagnetism , condensed matter physics , spin glass , electron paramagnetic resonance , magnetization , x ray photoelectron spectroscopy , ferromagnetism , materials science , curie temperature , spin (aerodynamics) , curie–weiss law , magnetic susceptibility , jahn–teller effect , chemistry , magnetic field , nuclear magnetic resonance , ion , physics , quantum mechanics , thermodynamics , organic chemistry
Herein, the magnetic behavior of Ba x Sr 2– x TiCoO 6 (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.