| Autor: |
Fukuzawa, Hideaki, Koi, Katsuhiko, Tomita, Hiroshi, Fuke, Hiromi Niu, Iwasaki, Hitoshi, Sahashi, Masashi |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 5/15/2002 Part 1, 2 & 3, Vol. 91 Issue 10, p6684, 7p, 1 Black and White Photograph, 2 Diagrams, 7 Graphs |
| Abstrakt: |
We compared the specular spin-valve films with an Fe[sub 50]Co[sub 50] nano-oxide layer (NOL) and a Co[sub 90]Fe[sub 10] NOL in a pinned layer, prepared by natural oxidation (NO) and ion-assisted oxidation (IAO). For the IAO, an Ar-ion beam was used for the energy-assist effect during the oxidation, resulting in thermally stable NOL formation. With small oxygen exposures during the oxidation for the Fe[sub 50]CO[sub 50] NOL by IAO, good ferromagnetic coupling through the NOL and high specularity at the NOL interface were concurrently obtained. Moreover, twisted coupling through the NOL was observed for the Fe[sub 50]Co[sub 50] NOL by IAO for higher oxygen exposures. On the other hand, the NO did not cause large magnetoresistance (MR) enhancement for either the Co[sub 90]Fe[sub l0] or Fe[sub 50]Co[sub 50] NOLs, and the Co[sub 90]Fe[sub l0] NOL by IAO caused weak magnetic coupling through the NOL, resulting in a small MR ratio. The Fe[sub 50]Co[sub 50] NOL for small oxygen exposures is a good candidate for a final specular spin-valve film head for 100-Giga-bit per square inch recording. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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