Temperature-Driven Spin Reorientation Transition in CoPtAlN Multilayer Films
Joint Authors
Cai, Wupeng
Muraishi, Shinji
Shi, Ji
Nakamura, Yoshio
Liu, Wei
Yu, Ronghai
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-06-21
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Spin reorientation transition phenomena from out-of-plane to in-plane direction with increasing temperature are observed for the 500°C annealed CoPt/AlN multilayer films with different CoPt layer thicknesses.
CoPt-AlN interface and volume anisotropy contributions, favoring out-of-plane and in-plane magnetization, respectively, are separately determined at various temperatures.
Interface anisotropy exhibits much stronger temperature dependence than volume contribution, hence the temperature-driven spin reorientation transition occurs.
Interface anisotropy in this work consists of Néel interface anisotropy and magnetoelastic effect.
Magnetoelastic effect degrades rapidly and changes its sign from positive to negative above 200°C, because of the involvement of stress state in CoPt films with temperature.
By contrast, Néel interface anisotropy decays slowly, estimated from a Néel mean field model.
Thus, the strong temperature dependence of CoPt-AlN interface anisotropy is dominated by the change of magnetoelastic effect.
American Psychological Association (APA)
Cai, Wupeng& Muraishi, Shinji& Shi, Ji& Nakamura, Yoshio& Liu, Wei& Yu, Ronghai. 2012. Temperature-Driven Spin Reorientation Transition in CoPtAlN Multilayer Films. Journal of Nanomaterials،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-998435
Modern Language Association (MLA)
Cai, Wupeng…[et al.]. Temperature-Driven Spin Reorientation Transition in CoPtAlN Multilayer Films. Journal of Nanomaterials No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-998435
American Medical Association (AMA)
Cai, Wupeng& Muraishi, Shinji& Shi, Ji& Nakamura, Yoshio& Liu, Wei& Yu, Ronghai. Temperature-Driven Spin Reorientation Transition in CoPtAlN Multilayer Films. Journal of Nanomaterials. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-998435
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-998435