Abstract
The electron paramagnetic resonance is used to measure the single-ion anisotropy of Gd3+ ions in the pyrochlore structure of (Y1-xGdx)2Ti2O7. A rather strong easy-plane-type anisotropy is found. The anisotropy constant D is comparable to the exchange integral J in the prototype Gd2Ti2O7, D0.75J, and exceeds the dipolar energy scale. Physical implications of an easy-plane anisotropy for a pyrochlore antiferromagnet are considered. We calculate the magnetization curves at T=0 and discuss phase transitions in a magnetic field. © 2005 The American Physical Society.
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CITATION STYLE
Glazkov, V. N., Zhitomirsky, M. E., Smirnov, A. I., Krug Von Nidda, H. A., Loidl, A., Marin, C., & Sanchez, J. P. (2005). Single-ion anisotropy in the gadolinium pyrochlores studied by electron paramagnetic resonance. Physical Review B - Condensed Matter and Materials Physics, 72(2). https://doi.org/10.1103/PhysRevB.72.020409
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