Chin. Phys. Lett.  2003, Vol. 20 Issue (5): 746-748    DOI:
Original Articles |
Annealing Effects on Properties of Bi-Substituted Garnet Films with Perpendicular Anisotropy Prepared by a Sol-Gel Method
ZHANG Yue-Pin1,2;WANG Xian-Ying1;Ruan Hao1;SHEN De-Fang1;GAN Fu-Xi1
1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 2Laboratory of Photo-Electronic Material, Ningbo University, Ningbo 315211
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ZHANG Yue-Pin, WANG Xian-Ying, Ruan Hao et al  2003 Chin. Phys. Lett. 20 746-748
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Abstract Bi-substituted garnet films with perpendicular anisotropy have been prepared by a sol-gel method. Annealing effects on magneto-optical properties and structures of the films are studied. The results indicate that the Kerr hysteresis loops of garnet films have good squareness at annealing temperatures above 650°C, the coercive force Hc of these films increases from 1070 to 1570 Oe with the increasing temperature from 650°C to 700°C. The Kerr rotation of the films was changed with the increasing annealing temperature, and there is a maximum value (0.82°C) at 675°C. It was found that the structure of the films is a single phase of garnet without preferring orientation when the annealing temperature is about 650°C, but a new phase (Bi2Al4O9) can be formed when the annealing temperature reaches 675°C, another new phase (Bi2Fe4O9) appears when the annealing temperature is about 700°C.

Keywords: 75.50.Gg      75.30.Gw      75.60.Nt      75.60.Ej     
Published: 01 May 2003
PACS:  75.50.Gg (Ferrimagnetics)  
  75.30.Gw (Magnetic anisotropy)  
  75.60.Nt (Magnetic annealing and temperature-hysteresis effects)  
  75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)  
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ZHANG Yue-Pin
WANG Xian-Ying
Ruan Hao
SHEN De-Fang
GAN Fu-Xi
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