[Co/Pd]-NiFe exchange springs with tunable magnetization tilt angle

We investigate exchange coupled [ Co / Pd ] 5 - NiFe thin films. Due to competition between the in-plane shape anisotropy of the NiFe and strong perpendicular magnetic anisotropy of the [ Co / Pd ] 5 multilayer, unique magnetic configurations are achievable. In particular, we explore the out-of-plan...

Full description

Saved in:
Bibliographic Details
Published inApplied physics letters Vol. 98; no. 17; pp. 172502 - 172502-3
Main Authors Nguyen, T. N. Anh, Fang, Y., Fallahi, V., Benatmane, N., Mohseni, S. M., Dumas, R. K., Åkerman, Johan
Format Journal Article
LanguageEnglish
Published American Institute of Physics 25.04.2011
Subjects
Condensed Matter Physics
Den kondenserade materiens fysik
Fysik
Magnetism
NATURAL SCIENCES
NATURVETENSKAP
Other physics
Physics
Spintronics
Tilted Anisotropy
Övrig fysik
Online AccessGet full text

Cover

More Information
Summary:We investigate exchange coupled [ Co / Pd ] 5 - NiFe thin films. Due to competition between the in-plane shape anisotropy of the NiFe and strong perpendicular magnetic anisotropy of the [ Co / Pd ] 5 multilayer, unique magnetic configurations are achievable. In particular, we explore the out-of-plane magnetization tilt angle of the NiFe layer. Experimental results, based on conventional magnetometry, ferromagnetic resonance, and magnetic force microscopy, agree well with one-dimensional micromagnetic simulations. We find that the tilt angle is highly tunable (0°-60°) over a small range of NiFe thicknesses (4.8-8 nm). Potential applications for high power, zero-field operation spin torque oscillators are discussed.
ISSN:0003-6951
1077-3118
1077-3118
DOI:10.1063/1.3580612