Magnetism in the S=1 frustrated antiferromagnet GeNi2O4 studied using implanted muons

T. Lancaster; S. J. Blundell; D. Prabhakaran; P. J. Baker; W. Hayes; F. L. Pratt

doi:10.1103/PhysRevB.73.184436

Magnetism in the S=1 frustrated antiferromagnet GeNi2O4 studied using implanted muons

Strongly Correlated Electrons 2007-11-14 v2 Other Condensed Matter

Authors: T. Lancaster , S. J. Blundell , D. Prabhakaran , P. J. Baker , W. Hayes , F. L. Pratt

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Abstract

We present the results of a muon-spin relaxation study of GeNi2O4. We provide further clarification of the two transitions to the antiferromagnetic state and measure the magnetic field dependence of the heat capacity up to 14 T. Both oscillatory and relaxing signals are observed below the lower transition (at temperature $T_{N2}) in the muon-decay positron asymmetry spectra, arising from two distinct types of magnetic environment. A possible explanation is suggested in terms of the separate ordering of two magnetic subsystems, one of which does not order fully down to the lowest measured temperature.

Keywords

muon-spin relaxation antiferromagnet frustrated magnet magnetic transition heat capacity

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@article{arxiv.cond-mat/0504139,
  title  = {Magnetism in the S=1 frustrated antiferromagnet GeNi2O4 studied using implanted muons},
  author = {T. Lancaster and S. J. Blundell and D. Prabhakaran and P. J. Baker and W. Hayes and F. L. Pratt},
  journal= {arXiv preprint arXiv:cond-mat/0504139},
  year   = {2007}
}

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6 pages with 3 figures

Magnetism in the S=1 frustrated antiferromagnet GeNi2O4 studied using implanted muons

Abstract

Keywords

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