Optical and magnetooptical properties of FePt-SiO2 magnetic nanocomposites

被引:0
|
作者
E. A. Gan’shina
M. Yu. Kochneva
M. V. Vashuk
P. N. Shcherbak
K. Aimuta
M. Inoue
机构
[1] Moscow State University,
[2] Toyohashi University of Technology,undefined
来源
关键词
SiO2; Percolation Threshold; Field Dependence; Magnetization Curve; Effective Medium;
D O I
暂无
中图分类号
学科分类号
摘要
The magnetic, optical, and magnetooptical properties of granular (FePt)1−x(SiO2)x nanocomposites in the disordered state and after heat treatment were studied. The magnetooptical response of samples in which the concentration of the metallic component approached the percolation threshold was observed to become considerably enhanced. Modeling transverse Kerr effect (TKE) spectra in a straightforward effective medium approximation provided a qualitative fit to the experimental data over a broad concentration range. The dependences of the Kerr effect on the SiO2 concentration in the nanocomposite are not monotonic and exhibit a sharp break near the percolation threshold. An analysis of the field dependences of the TKE and magnetization curves revealed that structural changes associated with ordering in annealed FePt films occur only in nanocomposites with fairly large grains.
引用
收藏
页码:1701 / 1706
页数:5
相关论文
共 50 条
  • [1] Optical and magnetooptical properties of FePt-SiO2 magnetic nanocomposites
    Gan'shina, EA
    Kochneva, MY
    Vashuk, MV
    Shcherbak, PN
    Aimuta, K
    Inoue, M
    PHYSICS OF THE SOLID STATE, 2005, 47 (09) : 1701 - 1706
  • [2] Optical and magneto-optical properties of magnetic nanocomposites FePt-SiO2
    Gan'shina, E
    Aimuta, K
    Granovsky, A
    Kochneva, M
    Sherbak, P
    Vashuk, M
    Nishimura, K
    Inoue, M
    JOURNAL OF APPLIED PHYSICS, 2004, 95 (11) : 6882 - 6884
  • [3] Granular nanostructures and magnetic properties of FePt-C/FePt-SiO2 films
    Zhang, Luran
    Liu, Liwang
    Hayasaka, Kouji
    Ishio, Shunji
    JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 651 : 389 - 392
  • [4] Granular nanostructures and magnetic properties of FePt-C/FePt-SiO2 films
    Zhang, Luran
    Liu, Liwang
    Hayasaka, Kouji
    Ishio, Shunji
    Journal of Alloys and Compounds, 2015, 651 : 389 - 392
  • [5] Microstructure and magnetic properties of FePt-SiO2 perpendicular recording media
    Hu, J. F.
    Chen, J. S.
    Lim, B. C.
    Liu, B.
    PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2008, 205 (10): : 2458 - 2463
  • [6] Microstructure and magnetic properties of FePt-SiO2 granular films with Ag addition
    Seki, T. O.
    Takahashi, Y. K.
    Hono, K.
    JOURNAL OF APPLIED PHYSICS, 2008, 103 (02)
  • [7] Microstructure and magnetic properties of FePt-SiO2 granular films with Ag addition
    Seki, T.O.
    Takahashi, Y.K.
    Hono, K.
    Journal of Applied Physics, 2008, 103 (02):
  • [8] Magnetic properties and microstructure of FePt-SiO2 nanocomposite films fabricated by nanocluster beam technology
    Tan, C. Y.
    Zhou, Y. Z.
    Chen, J. S.
    Chow, S. Y.
    Chow, G. M.
    THIN SOLID FILMS, 2006, 510 (1-2) : 286 - 291
  • [9] Control of microstructure in (001)-orientated FePt-SiO2 granular films
    Wu, Yun-Chung
    Wang, Liang-Wei
    Lai, Chih-Huang
    Chang, Ching-Ray
    Journal of Applied Physics, 2008, 103 (07):
  • [10] Control of microstructure in (001)-orientated FePt-SiO2 granular films
    Wu, Yun-Chung
    Wang, Liang-Wei
    Lai, Chih-Huang
    Chang, Ching-Ray
    JOURNAL OF APPLIED PHYSICS, 2008, 103 (07)