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http://elar.urfu.ru/handle/10995/101609
Title: | Large easy-axis anisotropy in the one-dimensional magnet BaMo(PO4)2 |
Authors: | Abdeldaim, A. H. Badrtdinov, D. I. Gibbs, A. S. Manuel, P. Walker, H. C. Le, M. D. Wu, C. H. Wardecki, D. Eriksson, S. -G. Kvashnin, Y. O. Tsirlin, A. A. Nilsen, Gø. J. |
Issue Date: | 2019 |
Publisher: | American Physical Society |
Citation: | Large easy-axis anisotropy in the one-dimensional magnet BaMo(PO4)2 / A. H. Abdeldaim, D. I. Badrtdinov, A. S. Gibbs, et al. — DOI 10.1103/PhysRevB.100.214427 // Physical Review B. — 2019. — Vol. 100. — Iss. 21. — 214427. |
Abstract: | We present an extensive experimental and theoretical study on the low-temperature magnetic properties of the monoclinic anhydrous alum compound BaMo(PO4)2. The magnetic susceptibility reveals strong antiferromagnetic interactions θCW=-167K and long-range magnetic order at TN=22K, in agreement with a recent report. Powder neutron diffraction furthermore shows that the order is collinear, with the moments near the ac plane. Neutron spectroscopy reveals a large excitation gap Δ=15meV in the low-temperature ordered phase, suggesting a much larger easy-axis spin anisotropy than anticipated. However, the large anisotropy justifies the relatively high ordered moment, Néel temperature, and collinear order observed experimentally and is furthermore reproduced in a first-principles calculations by using a new computational scheme. We therefore propose BaMo(PO4)2 to host S=1 antiferromagnetic chains with large easy-axis anisotropy, which has been theoretically predicted to realize novel excitation continua. © 2019 American Physical Society. |
Keywords: | ANISOTROPY ANTIFERROMAGNETISM BARIUM COMPOUNDS CALCULATIONS MAGNETIC SUSCEPTIBILITY TEMPERATURE ANTIFERRO-MAGNETIC INTERACTIONS ANTIFERROMAGNETIC CHAIN COMPUTATIONAL SCHEMES FIRST-PRINCIPLES CALCULATION LONG RANGE MAGNETIC ORDER NEUTRON SPECTROSCOPY ONE-DIMENSIONAL MAGNETS POWDER NEUTRON DIFFRACTION ONE DIMENSIONAL |
URI: | http://elar.urfu.ru/handle/10995/101609 |
Access: | info:eu-repo/semantics/openAccess |
SCOPUS ID: | 85077496624 |
PURE ID: | 11784737 |
ISSN: | 24699950 |
DOI: | 10.1103/PhysRevB.100.214427 |
Appears in Collections: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
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2-s2.0-85077496624.pdf | 2,4 MB | Adobe PDF | View/Open |
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