Magnetic Properties of Ultrathin gamma-Fe2O3 Films Grown on Silicon Substrate

作者：Sun Bai; Li Xiao Peng; Zhao Wen Xi; Chen Peng^*

来源：IEEE Transactions on Magnetics, 2014, 50(1): 2001204.

DOI：10.1109/TMAG.2013.2279932

• Annealing temperature
• magnetic properties
• silicon substrate
• thickness
• ultrathin gamma-Fe2O3 films

The effect of thickness and annealing temperature on the room-temperature magnetic properties of ultrathin gamma-Fe2O3 films grown on silicon substrate were investigated. Ultrathin gamma-Fe2O3 films were grown on silicon substrates by ion beam sputtering. The saturation magnetization and coercive force of samples at room temperature increase with increasing of annealing temperature and decrease at annealing temperatures above 600 degrees C. The saturation magnetization of samples at room temperature decreases with increasing of gamma-Fe2O3 thickness. The gamma-Fe2O3 samples about 3 similar to 6 nm thick annealed at 600 degrees C show saturation magnetization of about 360 similar to 410 emu/cm(3), which is close to the bulk value of about 390 emu/cm(3) within the error range.

• 出版日期2014-1
• 单位西南大学