| Autor: |
Sin, Kyusik, Gibbons, Matthew R., Funada, Shin, Mao, Ming, Rao, Dean, Chien, Chester, Tong, Hua-Ching |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 6/1/2001, Vol. 89 Issue 11, p7359, 3p, 1 Diagram, 3 Graphs |
| Abstrakt: |
We investigated the feasibility of a spin-dependent tunneling (SDT) read head with a parallel hard bias. In this scheme, the longitudinal biasing to the free layer is provided by fringe fields from a hard magnet which is fabricated over or under the free layer. A linear response to the applied field is achieved for a SDT junction biased with 400 Å CoCrPt underneath. Thinner CoCrPt layers yield Barkhausen jumps in the free layer. Micromagnetic simulation indicates the bias field at the edge of the free layer is smaller than that which would result from an abutted magnet. The simulation results are similar to experimental data, and indicate that shielded devices with 400 Å permanent magnet will provide stable transfer curves. © 2001 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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