Browse > Article
http://dx.doi.org/10.4283/JKMS.2010.20.2.041

Magnetic Sensitivity Depending on Width of IrMn Spin Valve Film Device  

Choi, Jong-Gu (Dept. of Eastern-western Biomedical Engineering, Graduation, Sangji University)
Lee, Sang-Suk (Dept. of Eastern-western Biomedical Engineering, Graduation, Sangji University)
Abstract
The Cu thickness dependence of magnetic sensitivity for the NiFe/Cu/NiFe/IrMn spin valve multilayer was investigated. The magnetic properties measured by minor MR curves for the Ta(5 nm)/NiFe(8 nm)/Cu(3.5 nm)/NiFe(4 nm)/IrMn(8 nm)/Ta(2.5 nm) multilayer is MR = 1.46 %, MS = 2.0 %/Oe, $H_c\;=\;2.6\;Oe$, and $H_{int}\;=\;0.1\;Oe$. The magnetic sensitivities of GMR-SV devices with ten different widths and a same length of $4.45\;{\mu}m$ by fabricated by photo lithography decreased from 0.3 %/Oe to 0.06%/Oe as from a width of $10\;{\mu}m$ to $1\;{\mu}m$.
Keywords
NiFe/Cu/NiFe/IrMn-spin valve film; width of device; magnetic sensitivity; interlayer exchange coupling field; magnetization easy axis;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 D. A. Baker, Nature 405, 39 (2000).   DOI   ScienceOn
2 G. Li, S. Sun, R. J. Wilson, R. L. White, N. Pourmand, and S.X. Wang, Sens. Acut. A 126, 98 (2006).   DOI   ScienceOn
3 J. Miyakoshi, Prog. Im Biophysics, Mol. Bio. 87, 213 (2005).   DOI   ScienceOn
4 J. M. Daughton, J. Magn. Magn. Maters. 192, 334 (1999).   DOI   ScienceOn
5 W. H. Lee, D. G. Hwang, and S. S. Lee, J. Magnetics 14, 18(2009).   DOI   ScienceOn
6 J. G. Choi, I. S. Ko, Y. M. Gong, M. H. Kim, Y. S. Park, D. G.Hwang, and S. S. Lee, J. Kor. Magn. Soc. (Korean) 19, 52(2009).   DOI   ScienceOn
7 P. Bruno and C. Chappert, “Magnetism and Structure in Systems of Reduced Dimension”, p389-p399, Edited by R. F. C. Farrow et al., Plenum Press, New York (1993).
8 D. W. Kim, J. H. Lee, M. J. Kim, and S. S. Lee, J. Magnetics14, 80 (2009).   DOI   ScienceOn
9 B. M. de Boer, J. A. H. M. Kahlman, T. P. G. H. Jansen, H.Duric, and J. Veen, Biosens. Bioelectron. 22, 2366 (2006).   DOI   ScienceOn
10 D. K. Wood, K. K. Ni, D. R. Schmidt, and A. N. Cleland, Sens. Acut. A 120, 1 (2005).   DOI   ScienceOn
11 S. H. Park, K. S. Soh, D. G. Hwang, J. R. Rhee, and S. S. Lee,J. Magnetics 13, 30 (2008).   DOI   ScienceOn
12 M. A. Ruderman and C. Kittel, Phys. Rev., 96, 99 (1954)   DOI
13 T. Kasuya, Progr. Theor. Phys. 16, 45 (1956)   DOI
14 K. Yosida, Phys. Rev. 106, 893 (1957).   DOI