Magnetization depth profile of (Fe/Dy) multilayers

作者：Tamion Alexandre^*; Ott Frederic; Berche Pierre Emmanuel; Talbot Etienne; Bordel Catherine; Blavette Didier

来源：Journal of Magnetism and Magnetic Materials, 2008, 320(21): 2650-2659.

DOI：10.1016/j.jmmm.2008.05.032

• Monte Carlo simulation
• Heisenberg model
• ferrimagnetic multilayer
• perpendicular magnetic anisotropy

An experimental and numerical study of the magnetization in (Fe 3 nm/Dy 2 nm) multilayers is presented. The samples were thermally evaporated under ultra-high vacuum at two different substrate temperatures, 320 and 570K. In order to get the magnetization depth pro. le of these transition metal/rare earth (TM/RE) multilayers, a. ne investigation of the structural, chemical, and magnetic properties was carried out. The samples were studied by X-ray reflectivity (XRR), high resolution transmission electron microscopy (HRTEM), conversion electron Mossbauer spectrometry (CEMS), SQUID magnetometry and polarized neutron reflectivity (PNR). Magnetization profiles were obtained by Monte Carlo simulations to support the PNR fits. The key role of the crystalline structure is emphasized by magnetic depth pro. le measurements performed using polarized neutron reflectometry. The antiparallel configuration of Fe and Dy layers' magnetizations was evidenced, as well as the perpendicular magnetic anisotropy (PMA), especially in the case of the sample prepared at 570K.

• 出版日期2008-11
• 单位中国地震局