Magnetic configurations of hexagonal iron rhenium multilayers |
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| Institution: | 1. Laboratoire de Physique et Chimie Quantique, Faculté des Sciences, Université Mouloud Mammeri de Tizi-Ouzou, 15000 Tizi-Ouzou, Algérie;2. Institut de Physique et Chimie des Matériaux de Strasbourg, 23 Rue du Loess, F-67037 Strasbourg, France;1. CFNUL, Av. Prof. Gama Pinto 2, P-1700 Lisboa, Portugal;2. LNETI, E.N. 10, P-2685 Sacavém, Portugal;3. INESC, R. Alves Redol, 9 3°, P-1000 Lisboa, Portugal;4. IST, Av. Rovisco Pais, P-1000 Lisboa, Portugal;5. IKS, Celestijnenlaan 200 D, B-3001 Leuven, Belgium;1. Dipartimento di Fisica and Unita’ INFM, Universita’ di Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy;2. Dipartimento di Ingegneria Meccanica and Unita’ INFM, Universita’ di Roma Tor Vergata, 00133 Roma, Italy;3. Dipartimento di Fisica and Unita’ INFM, Universita’ di Roma Tor Vergata, 00133 Roma, Italy;1. Department of Solid State Physics, Faculty of Physics & Nuclear Techniques, AGH University of Science and Technology, Cracow, Poland;2. Department of Physics & Astronomy, University of St. Andrews, St. Andrews, Scotland KY16 9SS, UK;3. Instituto de Ciencias de Materiales de Aragon, Universidad de Zaragoza CSIC, Zaragoza 50009, Spain |
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| Abstract: | We present ab initio calculation of the electronic structure and magnetic properties of Fe/Re multilayers assuming hcp crystallographic phase. The system is modeled according to recent structural analysis which shows that Fe/Re has bct(0 0 1) ordering for 0⩽tRe⩽8 Å after which a structural phase transition occurs to an hcp phase. Antiferromagnetic and ferromagnetic orders appear more stable than the nonmagnetic (NM) state, only when the Fe atoms begin to adopt an expanded volume of about 27% accompanied by an axial distortion (c/a=1.42). The sizeable magnetic moments calculated on Fe atoms contrast with the paramagnetic bulk hcp. These results are discussed and compared with recent experimental data on hcp Fe/Re superlattices and also with magnetic properties of Fe/Ru multilayers. |
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