Galvanomagnetic and magneto-optical properties of (Sm,Nd)(Tb,Dy)FeCo thin films

Xiang Wang; Ke Wang; Rui Xiong; Changbo Cai

doi:10.1117/12.385533

9 May 2000 Galvanomagnetic and magneto-optical properties of (Sm,Nd)(Tb,Dy)FeCo thin films

Xiang Wang, Ke Wang, Rui Xiong, Changbo Cai

Proceedings Volume 4077, International Conference on Sensors and Control Techniques (ICSC 2000); (2000) https://doi.org/10.1117/12.385533
Event: International Conference on Sensors and Control Techniques (ICSC2000), 2000, Wuhan, China

Abstract

Amorphous rare earth-transition metal (RE-TM) alloy films are being studied as a galvanomagnetic sensor or magneto- optic storage media. The Hall effect of the magnetic films is composed of the ordinary Hall effect and extraordinary Hall effect. The magnetic and magneto-optical properties of RE-TM alloys were investigated. We found that the Hall resistivity (rho) _H is large because of the large magnetic saturation M_s and electrical resistivity (rho) in amorphous film; Kerr rotation angle (theta) , and reflectivity R for SmDyFeCo films increase with increasing P_w, reaches their maximum and then decreases. The coercivity H_c increases with increasing P_w; the magnetic domains of present store information films by adding Nd, which were smaller in diameter than the present material of DyFeCo film at short wavelength, have been explored. It is also found that the experimental domain diameter of amorphous film is smaller than that of present film. So the recording density will be higher; Kerr rotation angle (theta) _k and reflectivity R, for double-layered films of AlN/TbFeCo/glass have been verified.

Citation Download Citation

Xiang Wang, Ke Wang, Rui Xiong, and Changbo Cai "Galvanomagnetic and magneto-optical properties of (Sm,Nd)(Tb,Dy)FeCo thin films", Proc. SPIE 4077, International Conference on Sensors and Control Techniques (ICSC 2000), (9 May 2000); https://doi.org/10.1117/12.385533

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