[Co/Pd]-NiFe exchange springs with tunable magnetization tilt angle
2011 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 98, no 17, 172502- p.Article in journal (Refereed) Published
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 degrees-60 degrees] over a small range of NiFe thicknesses (4.8-8nm). Potential applications for high power, zero-field operation spin torque oscillators are discussed.
Place, publisher, year, edition, pages
2011. Vol. 98, no 17, 172502- p.
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-34246DOI: 10.1063/1.3580612ISI: 000290046100035ScopusID: 2-s2.0-79955690573OAI: oai:DiVA.org:kth-34246DiVA: diva2:422567
FunderKnut and Alice Wallenberg FoundationSwedish Research Council
QC 201106132011-06-132011-05-302011-06-13Bibliographically approved