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Magnetoresistance of Ir22Mn78-based top, bottom, and dual spin valves
- Issue Date
- May-2004
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Co75Fe25/Ir22Mn7 delta-based top (TSV); bottom (BSV), and dual type spin valves (DSV); exchange coupling field; MR ratio; blocking temperature; crystalline texture
- Citation
- JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.272, pp 1877 - 1878
- Pages
- 2
- Journal Title
- JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
- Volume
- 272
- Start Page
- 1877
- End Page
- 1878
- ISSN
- 0304-8853
1873-4766
- Abstract
- The magnetoresistive properties Of Co75Fe25/Ir22Mn78-based top (TSV), bottom (BSV), and dual type spin valves (DSV) by DC magnetron sputtering were investigated. The magnetoresistance (MR) ratio and exchange coupling field (H-ex) of TSV were 5.6% and 430 Oe, respectively. For BSV the H-ex values (1180 Oe) is much higher while MR ratio (3.6%) is reduced with respect to TSV. The blocking temperatures (T-B) of the TSV and BSV were 250degreesC and 270degreesC, respectively. DSV, with MR ratio of 7.8% and H-ex of 850/510 Oe, showed two different exchange loops. (C) 2003 Elsevier B.V. All rights reserved.
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