Open AccessExchange bias effect in Ti doped nanocrystalline SrFeO3-δ
Author(s) -
A. Sendil Kumar,
S. Srinath
Publication year - 2014
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4894486
Subject(s) - exchange bias , coercivity , antiferromagnetism , nanocrystalline material , ferromagnetism , superexchange , magnetization , condensed matter physics , materials science , magnetic hysteresis , hysteresis , exchange interaction , doping , magnetic anisotropy , magnetic field , nanotechnology , physics , quantum mechanics
Materials of Ti doped nanocrystalline SrFeO3-δ were synthesized through solid state reaction. Detailed magnetization measurements were carried out in zero field cooled (ZFC) and field cooled (FC) conditions. Compounds of SrFe1-xTixO3-δ (x = 0.1 to 0.3) are found to be spin glass and parent compound is a helical antiferromagnet. Non magnetic Ti4+ reduces the strength of exchange interactions and the curvature of hysteresis is changed towards concave nature. Exchange bias is observed below the peak temperature (irreversibility in magnetization (TIrr)) in ZFC-FC of SrFe1-xTixO3-δ (x = 0 to 0.3). The coercivity and exchange bias field values are found to be decreases with increase in temperature. Observed exchange bias effect is attributed to competition between antiferromagnetic superexchange and ferromagnetic double exchange interactions