| Autor: |
Kenichi Aoshima, Junichi Kane, K. Yamada, N. Mukouyama, Hitoshi Kanai |
| Rok vydání: |
1998 |
| Předmět: |
|
| Zdroj: |
Journal of the Magnetics Society of Japan. 22:501-504 |
| ISSN: |
0285-0192 |
| DOI: |
10.3379/jmsjmag.22.501 |
| Popis: |
We investigated the PdPtMn bottom spin-valve, which had an high resistivity NiFeCr underlayer. The MR ratio of the NiFeCr-underlayer spin-valve became 1.14 times higher than that of a NiFe-underlayer, because the shunt loss of the underlayer was reduced, and the Hua of the pinned layer also became higher. We found by X-ray diffraction that a PdPtMn spin-valve with a Ta/NiFeCr underlayer had a strong (111) texture. Cross-sectional TEM observation revealed that PdPtMn on a NiFeCr underlayer had a larger grain than PdPtMn on a Ta underlayer. The initial layer of the PdPtMn with the NiFeCr underlayer had a stronger (111) orientation than the PdPtMn with the Ta underlayer. To achieve a large Hua, PdPtMn with a (111) texture and large grain size is required. We simulated the R-H curves of the spin-valve in the head shape. The shift in the quiescent operating point on the R-H curve was smaller for an NiFeCr underlayer than for an NiFe one. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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