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Magnetic dipole interactions in crystals

TitleMagnetic dipole interactions in crystals
Publication TypeJournal Article
Year of Publication2016
AuthorsJohnston, DC
JournalPhysical Review B
Volume93
Pagination014421
Date Published01
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000368292300005
Keywordsanisotropy, demagnetizing factors, ferromagnetism, ground-state, lattice, mnf2, neutron-diffraction, order, system
Abstract

1, where a change in sign of the chi anisotropy is found at c/a = 1. Finally, following the early work of Keffer [Phys. Rev. 87, 608 (1952)], the dipolar anisotropy of chi above T-N = 69 K of the prototype collinear Heisenberg-exchange-coupled tetragonal compound MnF2 is calculated and found to be in excellent agreement with experimental single-crystal literature data above 130 K, where the smoothly increasing deviation of the experimental data from the theory on cooling from 130 K to T-N is deduced to arise from dynamic short-range collinear c-axis AFM ordering in this temperature range driven by the exchange interactions.

DOI10.1103/PhysRevB.93.014421
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Complex States