Disappearance of Ising nature in Ca3ZnMnO6 studied by high-field ESR.
J Phys Condens Matter
; 26(23): 236001, 2014 Jun 11.
Article
in En
| MEDLINE
| ID: mdl-24828049
ABSTRACT
High-field electron spin resonance measurements of an antiferromagnet Ca3ZnMnO6 isostructure, with the Ising-chain multiferroic Ca3CoMnO6, have been carried out. Two distinct resonance modes were observed below TN = 25 K, which is well explained by conventional antiferromagnetic resonance theory with easy-plane anisotropy. The zero-field spin gap is derived to be about 166 GHz, originating from the easy-plane anisotropy and exchange interaction. Our result suggests that the Dzyaloshinsky-Moriya interaction, which may induce spin canting, is absent. Disappearance of Ising anisotropy in Ca3ZnMnO6 suggests that the Co(4+) ion, as well as the Co-Mn superexchange, plays an important role for the Ising nature in Ca3CoMnO6.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Oxides
/
Zinc Compounds
/
Manganese Compounds
/
Calcium Compounds
/
Electron Spin Resonance Spectroscopy
Language:
En
Journal:
J Phys Condens Matter
Year:
2014
Document type:
Article