반강자성 IrMn 층과 인접한 Co/Ni 다층박막의 수직 교환 바이어스

다국어 초록 (Multilingual Abstract)

We report the experimental observation of the perpendicular exchange bias effect in the ferromagnetic CoNi multilayers interfacing with antiferromagnetic IrMn layer. From a hysteresis loop measurement, it was found that as the antiferromagnetic IrMn thickness increases from 5 Å to 40 Å, the hysteresis loop is gradually changed from the symmetric shape to the asymmetric shape shifted by some amount corresponding to the exchange-biased field at the thickness of 20 Å. Also, the domain observation experiment shows that the domain reversals in the increasing and decreasing field regions at the sample with the thickness of 40 Å exhibit the same single domain wall motion even though they have the different coercivities.

참고문헌 (Reference)

1 B. Kagerer, 217 : 139-, 2000

2 J. Nogués, 192 : 203-, 1999

3 K. -S. Ryu, 5 : 093006-, 2012

4 K. -S. Ryu, 8 : 527-, 2013

5 S. M. Zhou, 63 : 104406-, 2001

6 S. -B. Choe, 73 : 2910-, 2002

7 S. Maat, 87 : 087202-, 2001

8 T. L. Kirk, 65 : 224426-, 2002

9 P. Kappenberger, 91 : 267202-, 2003

10 F. Garcia, 91 : 6905-, 2002

11 J. Sort, 83 : 1800-, 2003

12 F. Garcia, 83 : 3537-, 2003

13 C. H. Marrows, 68 : 012405-, 2003

14 S. van Dijken, 97 : 063907-, 2005

15 J. Sort, 72 : 104412-, 2005

16 F. Romanens, 72 : 134410-, 2005

17 M. Czapkiewicz, 77 : 024416-, 2008

18 Ch. Binek, 45 : 197-, 2005