Back to Search
Start Over
Temperature dependence of large exchange-bias in TbFe-Co/Pt
- Source :
- Applied Physics Letters. 101:222404
- Publication Year :
- 2012
- Publisher :
- AIP Publishing, 2012.
-
Abstract
- The exchange-bias effect provides unidirectional anisotropy to ferromagnetic thin-films in GMR and TMR sensors. It is weak because it relies on an inherently compensated coupling across a ferromagnet/antiferromagnet interface. We replace the antiferromagnet with a TbFe-based perpendicular-anisotropy amorphous ferrimagnet, coupling to an adjacent ferromagnet with 13-5 mJ/m2 for temperatures within 7.9–280 K. A large exchange-bias between 1.1 and 0.7 T in that temperature range ensues. The temperature dependence of the bias is step-like, and thus different from that of antiferromagnet-based exchange-bias systems. It suggests using this material in exchange-biased temperature assisted magnetic writing.
- Subjects :
- Condensed Matter::Materials Science
Magnetic anisotropy
Materials science
Exchange bias
Physics and Astronomy (miscellaneous)
Condensed matter physics
Magnetoresistance
Ferromagnetism
Ferrimagnetism
Antiferromagnetism
Condensed Matter::Strongly Correlated Electrons
Atmospheric temperature range
Anisotropy
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 101
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........edf523b47a0679786aaa064180f02f3b
- Full Text :
- https://doi.org/10.1063/1.4767142