| Abstract |
| To characterize the nano-oxide layer (NOL) in specular spin valve multilayer, the naturally oxidized CoFe layer was inserted between pinned CoFe layers. The under-, optimum, and over-oxidized samples were obtained by control of the oxidation time and the oxygen flow rate. The NOL was analyzed to be Fe oxide mainly by XPS data. As oxidation increased, the content of Fe oxide and the thickness of the NOL increased and too much thicker was obtained NOL in case of over oxidation. We concluded that the lower MR and the more slanted magnetization curve than the optimum could be attributed to the Fe oxide as an impurity in case of under-oxidation and the too thick NOL in case of over-oxidation. (Received February 16, 2004) |
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| Key Words |
| Specular spin valve, Nano oxide layer, Fe oxide |
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