Strong perpendicular magnetic anisotropy in [Co/Pt]n ultrathin superlattices. (20th December 2016)

• Record Type: Journal Article
• Authors: Liu, Yi; Qiu, Jinjun; Lim, Sze Ter; Toh, Suey Li; Zhu, Zhengyong; Han, Guchang; Zhu, Kaigui
• Is Part Of: Applied physics express. Volume 10:Number 1(2017)
• Publication Date: 2016-12-20
• Subjects: Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.7567/APEX.10.013005
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: Ultrathin [Co/Pt] n superlattice films consisting of 0.18–0.60-nm-thick Co and Pt sublayers were deposited by sputtering. A large in-plane saturation field ( H s ) of ∼39 kOe and a very large effective perpendicular magnetic anisotropy ( K eff ) with a magnitude of 10 7 erg/cm 3 were attained. The highest K eff was ∼1.40 × 10 7 erg/cm 3 . These films are promising candidates for the reference layer of the p-MgO magnetic tunnel junction in Gb-scale magnetic random-access memory.