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Juxtaposition of spin freezing and long range order in a series of geometrically frustrated antiferromagnetic gadolinium garnets
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Quilliam, J. A., Meng, S., Craig, H. A., Corruccini, L. R., Balakrishnan, Geetha, Petrenko, Oleg, Gomez, A., Kycia, S. W., Gingras, M. J. P. and Kycia, J. B. (2013) Juxtaposition of spin freezing and long range order in a series of geometrically frustrated antiferromagnetic gadolinium garnets. Physical Review B (Condensed Matter and Materials Physics), Volume 87 (Number 17). Article number 174421 . doi:10.1103/PhysRevB.87.174421
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Official URL: http://dx.doi.org/10.1103/PhysRevB.87.174421
Abstract
Specific heat measurements in zero magnetic field are presented on a homologous series of geometrically frustrated antiferromagnetic Heisenberg garnet systems. Measurements of Gd3Ga5O12, grown with isotopically pure Gd, agree well with previous results on samples with naturally abundant Gd, showing no ordering features. In contrast, samples of Gd3Te2Li3O12 and Gd3Al5O12 are found to exhibit clear ordering transitions at 243 and 175 mK, respectively. The effects of low level disorder are studied through dilution of Gd3+ with nonmagnetic Y3+ in Gd3Te2Li3O12. A thorough structural characterization, using x-ray diffraction, is performed on all of the samples studied. We discuss possible explanations for such diverse behavior in very similar systems.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science > Physics | ||||
| Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 1098-0121 | ||||
| Official Date: | 2013 | ||||
| Dates: |
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| Volume: | Volume 87 | ||||
| Number: | Number 17 | ||||
| Page Range: | Article number 174421 | ||||
| DOI: | 10.1103/PhysRevB.87.174421 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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