Effect of Fe doping on the magnetic ordering temperature of ErMnO3

Abstract

Electron spin resonance and magnetization studies on Bi0.5Ca0.5Mn0.95TM0.05O3 (TM = Cr, Fe, Co and Ni)We studied the effect of Fe doping on structural, magnetic, and dielectric properties of hexagonal ErMnO 3 system. For 50% doping of Fe on Mn site in ErMnO 3 modulated its crystallographic structure from hexagonal to orthorhombic phase. Accompanied with the structural phase transition in ErMnO 3 , the magnetic properties are effectively modified. The Fe doped samples exhibit enhancement in antiferromagnetic ordering N eel temperature (T N ) from 77 K (ErMnO 3 ) to 280 K (ErFe 0.5 Mn 0.5 O 3 ). The anomalies observed in the dielectric constant around T N in doped ErMnO 3 samples indicate the coupling between electric and magnetic order parameters. V C 2015 AIP Publishing LLC. [http://dx.