Electron spin resonance probed suppressing of the cycloidal spin structure in doped bismuth ferrites
Journal
Applied Physics Letters
Journal Volume
96
Journal Issue
23
Date Issued
2010
Author(s)
Abstract
The weak magnetism of bismuth ferrites Bi1−xDyxFeO3 with x=0.0 to 0.40 is studied via the electron spin resonance (ESR) of X-band (9.53 GHz) at various temperatures. The g-factor of pure BiFeO3 is 2.0, which originates from its cycloidal spin structure; while for the doped Bi1−xDyxFeO3 samples with x>0.10, ESR spectra reveal a second phase with a different g-factor around 1, which is attributed to the homogeneous magnetized phase of Bi1−xDyxFeO3. The temperature dependent ESR data further suggest a picture of the doping-induced transformation from cycloidal to canted antiferromagnetic state.
SDGs
Type
journal article