Competing interface and bulk anisotropies in Co-rich TbCo amorphous thin films

We study the magnetic properties of amorphous Tb Co100-xfilms with in the range 8-12 at% and with a thickness of 5-100 nm. In this range the magnetic properties are shaped by a competition between a perpendicular bulk magnetic anisotropy and an in-plane interface anisotropy, in addition to the chang...

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Bibliographic Details
Published inJournal of physics. Condensed matter Vol. 35; no. 20; pp. 205802 - 205808
Main Authors Thórarinsdóttir, K A, Thorbjarnardóttir, B R, Arnalds, U B, Magnus, F
Format Journal Article
LanguageEnglish
Published England IOP Publishing 24.05.2023
Subjects
anisotropy
Co-rich
magnetic
perpendicular
TbCo
tunable
magnetic
tunable
perpendicular
TbCo
Co-rich
anisotropy
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Summary:We study the magnetic properties of amorphous Tb Co100-xfilms with in the range 8-12 at% and with a thickness of 5-100 nm. In this range the magnetic properties are shaped by a competition between a perpendicular bulk magnetic anisotropy and an in-plane interface anisotropy, in addition to the changes in magnetization. This results in a temperature controllable spin reorientation transition from in-plane to out-of-plane which is thickness and composition dependent. Furthermore, we show that perpendicular anisotropy is recovered throughout an entire TbCo/CoAlZr multilayer, where neither TbCo nor CoAlZr single layers exhibit perpendicular anisotropy. This illustrates the important role of the TbCo interfaces in the overall effective anisotropy.
Bibliography:JPCM-121409.R1
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ISSN:0953-8984
1361-648X
DOI:10.1088/1361-648X/acc226