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Local nuclear and magnetic order in the two-dimensional spin glass, Mn0.5Fe0.5PS3
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Graham, J. N., Coak, Matthew John, Son, S., Suard, E., Park, J-G., Clark, L. and Wildes, A. R. (2020) Local nuclear and magnetic order in the two-dimensional spin glass, Mn0.5Fe0.5PS3. Physical Review Materials, 4 . 084401 . doi:10.1103/PhysRevMaterials.4.084401 ISSN 2475-9953.
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Official URL: https://doi.org/10.1103/PhysRevMaterials.4.084401
Abstract
We present a comprehensive study of the short-ranged nuclear and magnetic order in the two-dimensional spin glass, Mn0.5Fe0.5PS3. Nuclear neutron scattering data reveal a random distribution of Mn2+
and Fe2+ ions within the honeycomb layers, which gives rise to a spin glass state through inducing competition between neighboring exchange interactions, indicated in magnetic susceptibility data by a cusp at the glass transition, Tg=35 K. Analysis of magnetic diffuse neutron scattering data collected for both single-crystal and polycrystalline samples gives further insight into the origin of the spin glass phase, with spin correlations revealing a mixture of satisfied and unsatisfied correlations between magnetic moments within the honeycomb planes, which can be explained by considering the magnetic structures of the parent compounds, MnPS3 and FePS3. We found that, on approaching Tg from above, an ensemble-averaged correlation length of ξ=5.5(6)Å developed between satisfied correlations, and below Tg, the glassy behavior gave rise to a distance-independent correlation between unsatisfied moments. Correlations between the planes were found to be very weak, which mirrored our observations of rodlike structures parallel to the c* axis in our single-crystal diffraction measurements, confirming the two-dimensional nature of Mn0.5Fe0.5PS3.
Item Type: | Journal Article | ||||||||||||||||||
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Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Carbon, Carbon composites, Graphene, Two-dimensional materials , Spin glasses, Magnetic alloys, Nuclear spin, Neutrons -- Scattering, Nuclear magnetic resonance | ||||||||||||||||||
Journal or Publication Title: | Physical Review Materials | ||||||||||||||||||
Publisher: | American Physical Society | ||||||||||||||||||
ISSN: | 2475-9953 | ||||||||||||||||||
Official Date: | 3 August 2020 | ||||||||||||||||||
Dates: |
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Volume: | 4 | ||||||||||||||||||
Article Number: | 084401 | ||||||||||||||||||
DOI: | 10.1103/PhysRevMaterials.4.084401 | ||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||
Reuse Statement (publisher, data, author rights): | © 2020 American Physical Society | ||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||||||||
Copyright Holders: | ©2020 American Physical Society | ||||||||||||||||||
Date of first compliant deposit: | 28 July 2020 | ||||||||||||||||||
Date of first compliant Open Access: | 28 July 2020 | ||||||||||||||||||
RIOXX Funder/Project Grant: |
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