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Title: {sup 166}Er Mössbauer spectroscopy study of magnetic ordering in a spinel-based potential spin-ice system: CdEr{sub 2}S{sub 4}

{sup 166}Er Mössbauer spectroscopy measurements of CdEr{sub 2}S{sub 4} show a large hyperfine field (B{sub hf}) of 727.6(8) T at 5 K and clear evidence for slow paramagnetic relaxation with an energy barrier to reversal of 114(3) K. This behaviour stands in strong contrast to that of the corresponding pyrochlores (Er{sub 2}Sn{sub 2}O{sub 7} and Er{sub 2}Ti{sub 2}O{sub 7}) where no magnetic effects are seen down to 1.56 K. The clearly dynamic {sup 166}Er Mössbauer spectra and the absence of a break in the susceptibility data suggest that there is no magnetic order above 1.8 K in CdEr{sub 2}S{sub 4}.
Authors:
;  [1] ; ; ;  [2]
  1. Physics Department and Centre for the Physics of Materials, McGill University, 3600 University Street, Montreal, Quebec H3A 2T8 (Canada)
  2. Institut Nanosciences et Cryogénie, SPSMS, CEA and Université Grenoble Alpes, F-38000 Grenoble (France)
Publication Date:
OSTI Identifier:
22410016
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; CADMIUM COMPOUNDS; ERBIUM 166; ERBIUM SULFIDES; MAGNETIC FIELDS; MAGNETIC SUSCEPTIBILITY; MAGNETIZATION; MOESSBAUER EFFECT; PARAMAGNETISM; POTENTIALS; PYROCHLORE; RELAXATION; SPIN; SPINELS