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Phase diagrams for the precession states of the nanoparticle magnetization in a rotating magnetic field

Authors:	SI Denisov TV Lyutyy C Binns P H?nggi

Institution:	1. Universidade da Coruña, Grupo de Polímeros, Centro de Investigacións Tecnolóxicas, Campus de Ferrol, 15471 Ferrol, Spain;2. Dpto Química Orgánica I, Facultad de Óptica y Optometría, Universidad Complutense de Madrid, Arcos de Jalón 118, Madrid 28037, Spain;3. Center/Department of Physics, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal;4. BCMaterials, Parque Científico y Tecnológico de Bizkaia, 48160 Derio, Spain;5. IKERBASQUE, Basque Foundation for Science, Bilbao, Spain;1. Departament de Química, Universitat de Lleida and AGROTECNIO, Rovira Roure 191, 25198 Lleida, Spain;2. Departament de Química Analítica, Universitat de Barcelona, Martí i Franqués 1, 08028 Barcelona, Spain

Abstract:	Using the analytical and numerical solutions of the Landau–Lifshitz equation, we calculate the phase diagrams for the precession states of the nanoparticle magnetization in a rotating magnetic field. We show that there are three different scenarios for the magnetization switching. The bias magnetic field applied antiparallel to the nanoparticle magnetization strongly decreases the switching amplitudes and frequencies of the rotating field.

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