J. Mater. Sci. Technol. ›› 2017, Vol. 33 ›› Issue (3): 291-294.

• Orginal Article • Previous Articles     Next Articles

Magnetic Properties and Coercivity of MnGa Films Deposited on Different Substrates

Feng J.N.1,Liu W.1,*,Gong W.J.1,Zhao X.G.1,Kim D.2,Choi C.J.2,Zhang Z.D.1   

  1. 1 Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
    2 Powder and Ceramics Division, Korea Institute of Materials Science, 797 Changwon-daero, Changwon 642-831, South Korea.
  • Received:2016-02-23 Accepted:2016-03-31 Online:2017-03-20 Published:2017-05-18
  • Contact: Liu W.

Abstract:

MnGa films were grown by magnetron sputtering on thermally oxidized Si (Si/SiO2) and glass substrates. Films grown on single-crystal Si (100) substrate with different underlayers were prepared for comparison. It is found that the Si/SiO2 substrate is more suitable for growing high-coercivity MnGa films than the glass substrate, which is the result of the isolated-island-like growth. A coercivity of 9.7?kOe can be achieved for the 10?nm MnGa films grown on Si/SiO2 substrate at substrate temperature TS of 450?°C. Optimized experimental conditions are specified by changing the thickness of the MnGa films and the temperature of the substrates.

Key words: Atomic force microscopy, Coercivity, Magnetic properties, Magnetron sputtering, Thin film