L1(0) Ordering of FePtB Films on a Thin MgO Layer
- Authors
- Choi, Gyung-Min; Min, Byoung-Chul; Shin, Kyung-Ho
- Issue Date
- 2011-02
- Publisher
- JAPAN SOC APPLIED PHYSICS
- Citation
- APPLIED PHYSICS EXPRESS, v.4, no.2
- Abstract
- A strong perpendicular magnetic anisotropy is obtained in MgO/FePtB/Ti films. After high-temperature (600 degrees C) annealing, an amorphous FePtB layer on a thin polycrystalline MgO layer is transformed into an L1(0) ordered phase with a long range ordering parameter of 0.9 and an effective magnetic anisotropy of 1.29 x 10(7) erg/cm(3). The depth profile of the atomic concentration reveals that the Ti capping layer absorbs boron from the FePtB layer during the annealing. The high-resolution electron microscopy analysis shows that the crystallized FePtB layer has an epitaxial relationship with the underlying MgO layer. (C) 2011 The Japan Society of Applied Physics
- Keywords
- MAGNETIC TUNNEL-JUNCTION; ROOM-TEMPERATURE; MAGNETORESISTANCE; FePt; perpendicular magnetic anisotropy; magnetic tunnel junction
- ISSN
- 1882-0778
- URI
- https://pubs.kist.re.kr/handle/201004/130704
- DOI
- 10.1143/APEX.4.023001
- Appears in Collections:
- KIST Article > 2011
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