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A mu SR study of the magnetic properties of Tb2CuIn3
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.
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2013 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 87, no 5, 055702- p.Article in journal (Refereed) Published
Abstract [en]

Tb2CuIn3 shows exceptional magnetic behavior within the series of R2CuIn3 intermetallics (R denoting one of the rare earth elements), where long-range magnetic order is absent in favor of spin liquid magnetic ground states as a consequence of frustration by competing exchange. In contrast, neutron studies suggested for the magnetic ground state of Tb2CuIn3 the coexistence of long-range antiferromagnetic and short-range order. The present mu SR (muon spin rotation/relaxation) data show that at similar to 45K all Tb magnetic moments freeze into a spin-glass state. At T-N = 33K partial long-range order sets in, its volume fraction being similar to 30%. On cooling to 10 K, the antiferromagnetic fraction reaches the saturation value of 70% and hence remains coexistent with the spin-glass state for T -> 0. The antiferromagnetic state is characterized by considerable short-range spin disorder. At low temperatures the Tb moments in the two coexisting states approach the static limit. This absence of persistent moment fluctuations together with partial formation of long-range order indicates considerably lower frustration in Tb2CuIn3 compared to the rest of the R2CuIn3 compounds.

Place, publisher, year, edition, pages
2013. Vol. 87, no 5, 055702- p.
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Natural Sciences
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URN: urn:nbn:se:uu:diva-200677DOI: 10.1088/0031-8949/87/05/055702ISI: 000318274400025OAI: oai:DiVA.org:uu-200677DiVA: diva2:624790
Available from: 2013-06-03 Created: 2013-06-03 Last updated: 2017-12-06Bibliographically approved

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Hartmann, OlaWäppling, Roger

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