This title appears in the Scientific Report :
2007
Please use the identifier:
http://hdl.handle.net/2128/18081 in citations.
Please use the identifier: http://dx.doi.org/10.1063/1.2710181 in citations.
First-principles prediction of high Curie temperature for ferromagnetic bcc-Co and bcc-FeCo alloys and its relevance to tunneling magnetoresistance
First-principles prediction of high Curie temperature for ferromagnetic bcc-Co and bcc-FeCo alloys and its relevance to tunneling magnetoresistance
The authors determine from first principles the Curie temperature T-C for bulk Co in the hcp, fcc, bcc, and body-centered-tetragonal (bct) phases, for FeCo alloys, and for bcc and bct Fe. For bcc Co, T-C=1420 K is predicted. This would be the highest Curie temperature among the Co phases, suggesting...
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Personal Name(s): | Lezaic, M. |
---|---|
Mavropoulos, Ph. / Blügel, S. | |
Contributing Institute: |
Center of Nanoelectronic Systems for Information Technology; CNI Jülich-Aachen Research Alliance - Simulation Sciences; JARA-SIM Quanten-Theorie der Materialien; IFF-1 |
Published in: | Applied physics letters, 90 (2007) S. 082504 |
Imprint: |
Melville, NY
American Institute of Physics
2007
|
Physical Description: |
082504 |
DOI: |
10.1063/1.2710181 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
Applied Physics Letters
90 |
Subject (ZB): | |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1063/1.2710181 in citations.
The authors determine from first principles the Curie temperature T-C for bulk Co in the hcp, fcc, bcc, and body-centered-tetragonal (bct) phases, for FeCo alloys, and for bcc and bct Fe. For bcc Co, T-C=1420 K is predicted. This would be the highest Curie temperature among the Co phases, suggesting that bcc-Co/MgO/bcc-Co tunnel junctions offer high magnetoresistance ratios even at room temperature. The Curie temperatures are calculated by mapping ab initio results to a Heisenberg model, which is solved by a Monte Carlo method. (c) 2007 American Institute of Physics. |