B-site order/disorder in A<sub>2</sub>BB′O<sub>6</sub> and its correlation with their magnetic property
Mohd Alam, Sandip Chatterjee
Abstract
Abstract The disorder in any system affects their physical behavior. In this scenario, we report the possibility of disorder in A 2 BB′O 6 oxides and their effect on different magnetic properties. These systems show anti-site disorder by interchanging B and B′ elements from their ordered position and giving rise to an anti-phase boundary. The presence of disorder leads to a reduction in saturation M and magnetic transition temperature. The disorder prevents the system from sharp magnetic transition which originates short-range clustered phase (or Griffiths phase) in the paramagnetic region just above the long-range magnetic transition temperature. Further, we report that the presence of anti-site disorder and anti-phase boundary in A 2 BB′O 6 oxides give different interesting magnetic phases like metamagnetic transition, spin-glass, exchange bias, magnetocaloric effect, magnetodielectric, magnetoresistance, spin-phonon coupling, etc.