Structural and Magnetic Properties of FePt-C Nanocomposite Films
WANG Hao1, YANG Fu-Jun1, CHEN Kan-Song1, ZHOU Bin1, ZHANG Yuan-Wei1, GU Hao-Shuang1, CHIAH M. F.2, CHEUNG W. Y.2, WONG S. P2
1Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062
2Department of Electronic Engineering and Materials Science and Technology Research Centre, The Chinese University of Hong Kong, Hong Kong
Structural and Magnetic Properties of FePt-C Nanocomposite Films
WANG Hao1;YANG Fu-Jun1;CHEN Kan-Song1;ZHOU Bin1;ZHANG Yuan-Wei1;GU Hao-Shuang1;CHIAH M. F.2;CHEUNG W. Y.2;WONG S. P2
1Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062
2Department of Electronic Engineering and Materials Science and Technology Research Centre, The Chinese University of Hong Kong, Hong Kong
Abstract： Nanocomposite FePt-C thin films were prepared by a pulsed filtered vacuum arc deposition technique. The films were characterized by non-Rutherford backscattering spectrometry, x-ray diffraction, and magnetic force microscopy. The dependence of magnetic properties against annealing temperature was studied by using a vibrating sample magnetometer. Both x-ray diffraction and magnetic force microscopy analyses confirmed the formation of nano-crystallites of face-centred-tetragonal phase of FePt in the carbon matrix after annealing at a sufficiently high temperature. For the film with a composition of (Fe0.55Pt0.45)0.78C0.22, the coercivity and the grain size were observed to increase with increasing annealing temperature, up to a value of 3.5 kOe at an annealing temperature of 650°C, and with a grain size about 10.5 nm.
(Domain structure (including magnetic bubbles and vortices))
引用本文:
WANG Hao;YANG Fu-Jun;CHEN Kan-Song;ZHOU Bin;ZHANG Yuan-Wei;GU Hao-Shuang;CHIAH M. F.;CHEUNG W. Y.;WONG S. P. Structural and Magnetic Properties of FePt-C Nanocomposite Films[J]. 中国物理快报, 2004, 21(5): 949-951.
WANG Hao, YANG Fu-Jun, CHEN Kan-Song, ZHOU Bin, ZHANG Yuan-Wei, GU Hao-Shuang, CHIAH M. F., CHEUNG W. Y., WONG S. P. Structural and Magnetic Properties of FePt-C Nanocomposite Films. Chin. Phys. Lett., 2004, 21(5): 949-951.
2004, Vol. 21 
