Effect of Preparation Conditions on Magnetic and Dielectric Properties of Y2MMnO6 (M = Co, Ni)

• DOI: 10.1111/jace.13975
• Publication Date: 2015-10-08T05:58:43Z
• Authors: Vasundhara Katari; Peram Delli Babu; Sanjaya K. Mishra; Ranjan Mittal; Samatha Bevara; Srungarpu N. Achary; Sudhansu K. Deshp...; Avesh K. Tyagi
• Keywords: Metamagnetism; Inert gas

Herein we report the structure, magnetic and dielectric properties of Y 2 CoMnO 6 ( YCMO ) NiMnO YNMO prepared under various conditions. On annealing in inert atmosphere, sample shows a partial decomposition while remains unaffected. Both samples show paramagnetic to ferromagnetic transition around 80 K, but only depend on preparation antiferromagnetic ground state zero field metamagnetic at relatively low (~2 T). Differences environment do not destroy initial antiparallel spin order , affect critical fields transition. The field‐dependent indicated soft nature samples. measurements distinct frequency temperature‐dependent features compared A large relative permittivity with ε׳ about 10 4 is observed both O air‐annealed Multiple relaxations are all annealed