Szczegóły publikacji
Opis bibliograficzny
Effect of buffer layer texture on the crystallization of $CoFeB$ and on the tunnel magnetoresistance in MgO based magnetic tunnel junctions / J. Cao, J. KANAK, T. STOBIECKI, P. WIŚNIOWSKI, P. P. Freitas // IEEE Transactions on Magnetics ; ISSN 0018-9464 . — 2009 — vol. 45 no. 10, s. 3464–3466. — Bibliogr. s. 3466
Autorzy (5)
- Cao Junyi
- AGHKanak Jarosław
- AGHStobiecki Tomasz
- AGHWiśniowski Piotr
- Freitas Paulo P.
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 48082 |
|---|---|
| Data dodania do BaDAP | 2009-11-02 |
| Tekst źródłowy | URL |
| DOI | 10.1109/TMAG.2009.2025382 |
| Rok publikacji | 2009 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | IEEE Transactions on Magnetics |
Abstract
Two different buffer layers (Ta/Ru/Ta and thick Ta) were tested for MgO MTJs. The influence of buffer layer texture on the crystallization of CoFeB bottom and top electrodes and on the tunnel magnetoresistance effect was investigated. X-ray results suggest that, after anneal, the CoFeB layer above MgO is well (200) textured and it does not depend on the buffer layer since MgO (100) barrier supplies a good template for CoFeB (200) orientation, while the crystallization of bottom CoFeB layer relies on the buffer layer texture. Different from Ta (110) found in Ta/Ru/Ta buffer layer, a thick Ta buffer layer has β-(200) texture, which induces (001) oriented grains in MnPt layer. Because of the epitaxy relationship between MnPt and FeCo with MnPt(001)[100]//FeCo(200)[110], MnPt (001) oriented grains lead to the crystallization of bottom CoFeB layer with (200) orientation. As a result, higher TMR ratio up to 290% was achieved in the EB-MTJs with thick Ta buffer layer. © 2009 IEEE.
