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Magnetic order in an MnF2 epitaxial layer with the orthorhombic structure |
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| Authors: | I. V. Golosovsky N. S. Sokolov A. K. Kaveev M. Boehm J. Nogués S. Nannarone |
| Affiliation: | 1. Petersburg Nuclear Physics Institute, Russian Academy of Sciences, Gatchina, Leningrad region, 188300, Russia 2. Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia 3. Institut Laue-Langevin, BP 15, 38042, Grenoble, France 4. Institució Caralana de Recerca i Estudis Avan?ats (ICREA) and Departament de Fisica, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain 5. TASC CNR-INFM e Dipartimento Ingegneria dei Materiali e ambiente, Università di Modena e R. Emilia, 41100, Modena, Italy |
| Abstract: | The magnetic structure of MnF2 is determined by the neutron diffraction method in the metastable orthorhombic phase grown in the form of thin (～1 μm) film on a CaF2 buffer layer by the molecular beam epitaxy method. The magnetic moments of Mn++ form a simple two-sublattice antiferromagnetic structure and are directed along the c crystallographic axis parallel to the film plane. Using the temperature dependence of magnetic reflections, a Néel temperature of 67.19(7) K and a critical index of 0.50(2), which corresponds to the mean field approximation, are determined. |
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