论文部分内容阅读
Exchange coupling multilayer thin films, which combined giant magnetostriction and soft magnetic properties, were of growing interest for applications. The TbFe/FeAl multilayer thin films were prepared by dc magnetron sputtering onto glass substrates. The microstructure, magnetic, and magnetostrictive properties of TbFe/FeAl multilayer thin film was investigated at different annealing temperatures. The results indicated that the soft magnetic and magnetostrictive properties for TbFe/FeAl multilayer thin film compared with TbFe single layer film were obviously improved. In comparison with the intrinsic coercivity JHc of 59.2 kA/m for TbFe single layer film, the intrinsic coercivity JHc for TbFe/FeAl multilayer thin films rapidly dropped to 29.6 kA/m. After optimal annealing (350 °C×60 min), magnetic properties of Hs=96 kA/m and JHc=16 kA/m were obtained, and magnetostrictive coefficient could reach to 574×10–6 under an external magnetic field of 400 kA-m-1 for the TbFe/FeAl multilayer thin film.
The coupling structure of thin films, which combined giant magnetostriction and soft magnetic properties, were growing interest for applications. The TbFe / FeAl multilayer thin films were prepared by dc magnetron sputtering onto glass substrates. The microstructure, magnetic, and magnetostrictive properties of TbFe / FeAl multilayer thin film was investigated at different annealing temperatures. The results indicated that the soft magnetic and magnetostrictive properties for TbFe / FeAl multilayer thin compared with TbFe single layer film were significantly improved. In comparison with intrinsic coercivity JHc of 59.2 kA / m After optimal annealing (350 ° C × 60 min), the magnetic properties of Hs = 96 kA / m and JHc = 16 for TbFe single layer film, the intrinsic coercivity JHc for TbFe / FeAl multilayer thin films were dropped to 29.6 kA / kA / m were obtained, and magnetostrictive coefficient could reach to 574 × 10-6 under an external magnetic field of 400 kA-m-1 for the TbFe / FeAl multila yer thin film.