Effect of the Buffer Layer on the Magnetic Properties in CoFe/Pd Multilayers

다국어 초록 (Multilingual Abstract)

CoFe/Pd multilayers overcome the shape anisotropy and clearly show the perpendicular magnetization. The Pd buffer layer determines the coerciviy of the multilayer by varying the thickness without reducing the magnetic moment. While the coercivity is 0.18 kOe without a buffer layer, the coercivity becomes 0.93 kOe with a 20 nm buffer layer. The coercivity is linearly increased with the thickness of the buffer layer. As increasing the buffer thickness, the multilayer possesses a rougher surface which induces the pinning site and increases coercivity. The CoFe/Pd multilayer with an Au buffer layer has larger coercivity than that with a Pd buffer layer because the Au buffer has a much rougher surface.

참고문헌 (Reference)

1 G. A. Prinz, 262 : 1660-, 1998

2 S. Ikeda1, 9 : 721-, 2010

3 A. Aharoni, 83 : 3432-, 2003

4 I. Zutic, 76 : 323-, 2004

5 H. Kronm¨uller, 74 : 291-, 1988

6 R. D. Gomez, 85 : 6163-, 1999

7 H. Koo, 87 : 5114-, 2000

8 P. F. Garcia, 63 : 5066-, 1988

9 H. J. G. Draaisma, 63 : 3479-, 1988

10 H. J. G. Draaisma, 62 : 3318-, 1987

11 F. Garcia, 93 : 8397-, 2003

12 S. M. Zhou, 69 : 024408-, 2004

13 Z. Y. Liu, 91 : 037207-, 2003

14 F. Albertini, 240 : 526-, 2002

15 G. Gubbiotti, 93 : 7241-, 2003

16 G. Gubbiotti, 428 : 102-, 2003

17 T. K. Hatwar, 31 : 3256-, 1995

18 V. Fournee, 67 : 033406-, 2003

19 T. Suzuki, 28 : 2754-, 1992

20 구현철, "Spin Hall Effect Induced by a Pd/CoFe Multilayer in a Semiconductor Channel" 한국물리학회 53 (53): 1357-1361, 2008

21 Tae Hwan Lee, "Crystalline Anisotropy Effect on Magnetic Properties and Its Competition with Shape Anisotropy" 대한금속·재료학회 17 (17): 509-513, 2011