Analysis of crystallization kinetics of sputtered SmCo based permanent magnetic films

作者：Peng Long^*; Li Lezhong; Yang Dingyu; Zhu Xinghua

来源：Journal of Magnetism and Magnetic Materials, 2012, 324(8): 1539-1542.

DOI：10.1016/j.jmmm.2011.11.061

• Crystallization kinetics
• SmCo films
• Activation energy
• Mechanism

Crystallization kinetics of the sputtered SmCo based permanent magnetic films was investigated by differential scanning calorimeter, x-ray diffraction, and atomic force microscope methods. The results show that the apparent activation energy for crystallization is observed as 173.7 kJ/mol, and the local activation energy for crystallization decreases with increasing crystal phase transformation fraction in non-isothermal crystallization. For isothermal crystallization, the apparent activation energy for crystallization is 159.8 kJ/mol. The local activation energy for crystallization exhibits non-monotonic dependence on the crystal phase transformation fraction. The crystallization mechanism is obtained from the investigation of Avrami exponent and microstructure.

• 出版日期2012-4
• 单位成都信息工程大学