Abstract
The near-edge x-ray absorption fine structure (NEXAFS) spectroscopy was used to analyze the chemical states of cobalt (Co) and iron (Fe) in the specularly reflective ultrathin oxide layer in spin valves. The magnetoresistance responses show that oxygen reacted with the solute Fe rather than with the solvent Co. The Fe oxide transformed into α-Fe 2O3, leading to an increase in the magnetoresistance values. The results show that the magnetoresistance performance and the magnetic properties of the spin valves were improved by obtaining and controlling the appropriate oxide phases.
| Original language | English |
|---|---|
| Pages (from-to) | 4803-4805 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 83 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - 2003 Dec 8 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
}
Chemical states of Co and Fe in a specularly reflective oxide layer in spin valves. / Hong, Jongill; Lee, Youngjun; Lee, Min Kyu; Song, Ha Jin; Shin, Hyun Joon; Yoo, Yonggoo; Suh, Jeongdae.
In: Applied Physics Letters, Vol. 83, No. 23, 08.12.2003, p. 4803-4805.Research output: Contribution to journal › Article
TY - JOUR
T1 - Chemical states of Co and Fe in a specularly reflective oxide layer in spin valves
AU - Hong, Jongill
AU - Lee, Youngjun
AU - Lee, Min Kyu
AU - Song, Ha Jin
AU - Shin, Hyun Joon
AU - Yoo, Yonggoo
AU - Suh, Jeongdae
PY - 2003/12/8
Y1 - 2003/12/8
N2 - The near-edge x-ray absorption fine structure (NEXAFS) spectroscopy was used to analyze the chemical states of cobalt (Co) and iron (Fe) in the specularly reflective ultrathin oxide layer in spin valves. The magnetoresistance responses show that oxygen reacted with the solute Fe rather than with the solvent Co. The Fe oxide transformed into α-Fe 2O3, leading to an increase in the magnetoresistance values. The results show that the magnetoresistance performance and the magnetic properties of the spin valves were improved by obtaining and controlling the appropriate oxide phases.
AB - The near-edge x-ray absorption fine structure (NEXAFS) spectroscopy was used to analyze the chemical states of cobalt (Co) and iron (Fe) in the specularly reflective ultrathin oxide layer in spin valves. The magnetoresistance responses show that oxygen reacted with the solute Fe rather than with the solvent Co. The Fe oxide transformed into α-Fe 2O3, leading to an increase in the magnetoresistance values. The results show that the magnetoresistance performance and the magnetic properties of the spin valves were improved by obtaining and controlling the appropriate oxide phases.
UR - http://www.scopus.com/inward/record.url?scp=0346306322&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0346306322&partnerID=8YFLogxK
U2 - 10.1063/1.1632024
DO - 10.1063/1.1632024
M3 - Article
VL - 83
SP - 4803
EP - 4805
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 23
ER -