ESR study of the single-ion anisotropy in the pyrochlore antiferromagnet Gd2Sn2O7
V.N.Glazkov, A.I.Smirnov, J.P.Sanchez, A. Forget, D. Colson, P., Bonville
TL;DR
This study uses ESR to measure the single-ion anisotropy in Gd2Sn2O7, revealing it has an easy-plane anisotropy with a constant smaller than in Gd2Ti2O7, impacting magnetic ordering understanding.
Contribution
The paper provides the first ESR-based measurement of anisotropy parameters in Gd2Sn2O7, highlighting differences from Gd2Ti2O7.
Findings
Anisotropy in Gd2Sn2O7 is of the easy-plane type.
The main anisotropy constant D is 140 mK.
D is 35% smaller than in Gd2Ti2O7.
Abstract
Single-ion anisotropy is of importance for the magnetic ordering of the frustrated pyrochlore antiferromagnets Gd2Ti2O7 and Gd2Sn2O7. The anisotropy parameters for the Gd2Sn2O7 were measured using the electron spin resonance (ESR) technique. The anisotropy was found to be of the easy plane type, with the main constant D=140mK. This value is 35% smaller than the value of the corresponding anisotropy constant in the related compound Gd2Ti2O7.
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