Neutron scattering study of the classical antiferromagnet MnF2 : A perfect hands-on neutron scattering teaching course

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DOIResolve DOI: http://doi.org/10.1139/P10-081
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TypeArticle
Journal titleCanadian Journal of Physics
ISSN1208-6045
0008-4204
Volume88
IssueOctober 10
Pages771797; # of pages: 27
AbstractWe present the classical antiferromagnet MnF₂ as a perfect demonstration system for teaching a remarkably wide variety of neutron scattering concepts. The nature of antiferromagnetism and the magnetic Hamiltonian in this classical antiferromagnet are discussed. The transition temperature to the Neel state, the value of magnetic moment in the ordered state, the critical scattering close to the phase transition, spin waves associated with the ordering of the moments, as well as their dispersion and temperature dependences are determined experimentally. Parameters such as the Neel transition temperature and exchange coupling constants obtained from the experiments agree reasonably well with the previously published data. In addition, details of how an inelastic neutron scattering experiment is performed by means of triple-axis spectroscopy are provided.
Publication date
LanguageEnglish
AffiliationNRC Canadian Neutron Beam Centre; National Research Council Canada
Peer reviewedYes
NPARC number16945683
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Record identifier0a7c4f11-c6c5-4d55-a76f-070b982e18bd
Record created2011-03-03
Record modified2016-05-09
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