New spin configurations in nano‐sized magnets near reorientation phase transition
作者： M. Kisielewski , A. Maziewski , V. Zablotskii
关键词: Magnet 、 Anisotropy 、 Magnetization 、 Chemistry 、 Magnetic field 、 Condensed matter physics 、 Spin-½ 、 Demagnetizing field 、 Phase transition 、 Nanowire
摘要: We review the evolution of magnetization distributions in samples with low magnetic perpendicular-anisotropy described by quality factor Q (the relation between anisotropy and demagnetization energies). Infinite ultrathin films, nanowires disks are studied using real parameters determined for cobalt. By micromagnetic simulations we demonstrate novel types distributions. Reconstructions at spin reorientation transition (RPT) from perpendicular to in-plane state discussed. show that sample edge significantly affects distribution performance shifts RPT lower (higher nanostructure thickness) and/or higher amplitude applied fields comparison those laterally infinite films. A unified thermodynamic treatment is presented transitions nanowires. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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