Magnetic sublattices in nickel ferrite |
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| Institution: | 1. Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apartado Postal 70-360 México, D.F. 04510, Mexico;7. Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico;1. Institute of Construction and Architecture, Slovak Academy of Sciences, 84503 Bratislava, Slovakia;2. Center for Aerospace Research & Education, University of California, Irvine, CA, USA;1. Musculoskeletal Research Center, Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA;2. Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA;3. Magee-Womens Research Institute, University of Pittsburgh, Pittsburgh, PA, USA;1. Dep. of Applied Math., VŠB – Technical University of Ostrava, 17. listopadu 15, CZ 70833 Ostrava, Czech Republic;2. IT4Innovations National Supercomputing Center, VŠB – Technical University of Ostrava, 17. listopadu 15, CZ 70833 Ostrava, Czech Republic;3. Faculty of Mechanical Engineering, VSB – Technical University of Ostrava, 17. listopadu 15/2172, Ostrava, Czech Republic;1. The MacDiarmid Institute for Advanced Materials and Nanotechnology, SCPS, Victoria University of Wellington, PO Box 600, Wellington, 6140, New Zealand;2. National Isotope Centre, GNS Science, PO Box 31312, Lower Hutt, 5010, New Zealand;3. Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328, Dresden, Germany;1. INQUISUR (UNS-CONICET), Alem 1253, 8000 Bahía Blanca, Argentina;2. PLAPIQUI (UNS-CONICET), Camino La Carrindanga km 7, 8000 Bahía Blanca, Argentina;3. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CIC), 1900 La Plata, Argentina;4. Instituto de Ciencia y Tecnología de Polímeros (ICTP–CSIC), Juan de la Cierva 3, Madrid 28006, Spain |
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| Abstract: | A definition of the concept of “magnetic sublattice” is proposed by the following three steps, i.e.,i) the “site sublattice”, ii) the “cationic sublattice” and iii) the “magnetic sublattice”. The most important feature of this concept is the condition of long range order in the occupancy of the cation sites, including the direction of the magnetic moment. These ideas are applied to the case of nickel ferrite. Under the assumption that an ordered configuration on B sites (alternate rows of Ni and Fe cations) is obtained by slow cooling of samples, an estimation of the Curie temperature of the disordered (quenched) configuration is given. The calculated value (826 K) is in good agreement with the experimental value (838 K). |
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