Single-ion anisotropy in the gadolinium pyrochlores studied by an electron paramagnetic resonance

V. N. Glazkov; M. E. Zhitomirsky; A. I. Smirnov; H. -A. Krug von Nidda; A. Loidl; C. Marin; J. -P. Sanchez

doi:10.1103/PhysRevB.72.020409

Single-ion anisotropy in the gadolinium pyrochlores studied by an electron paramagnetic resonance

Strongly Correlated Electrons 2007-05-23 v1

Authors: V. N. Glazkov , M. E. Zhitomirsky , A. I. Smirnov , H. -A. Krug von Nidda , A. Loidl , C. Marin , J. -P. Sanchez

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Abstract

The electron paramagnetic resonance is used to measure the single-ion anisotropy of Gd3+ ions in the pyrochlore structure of (Y{1-x}Gdx)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, D~0.75J 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 magnetic field.

Keywords

single-ion anisotropy gadolinium pyrochlore electron paramagnetic resonance easy-plane anisotropy antiferromagnet magnetization curve phase transition

Cite

@article{arxiv.cond-mat/0507413,
  title  = {Single-ion anisotropy in the gadolinium pyrochlores studied by an electron paramagnetic resonance},
  author = {V. N. Glazkov and M. E. Zhitomirsky and A. I. Smirnov and H. -A. Krug von Nidda and A. Loidl and C. Marin and J. -P. Sanchez},
  journal= {arXiv preprint arXiv:cond-mat/0507413},
  year   = {2007}
}

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5 pages, accepted to PRB

Single-ion anisotropy in the gadolinium pyrochlores studied by an electron paramagnetic resonance

Abstract

Keywords

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