DocumentCode
3560339
Title
Detection of an Infrared Magnetorefractive Effect From a Layered Fe/MgO/Fe Magnetic Tunnel Junction
Author
Mennicke, R.T. ; Berryman, R. ; Matthew, J.A.D. ; Thompson, S.M. ; Yakushiji, K. ; Ernult, F. ; Mitani, S. ; Takanashi, K.
Author_Institution
Dept. of Phys., Univ. of York, York
Volume
44
Issue
11
fYear
2008
Firstpage
2566
Lastpage
2568
Abstract
The magnetorefractive effect (MRE) has become an established technique for the contactless measurement of giant and colossal magnetoresistance and has also been extended to the study of thick granular tunnelling films. Here, the MRE is used to study the behaviour of a MgO(100)/Mg0(20 nm)/Fe(20 nm)/MgO(1.5 nm)/Fe(5 nm)/Co(3 nm)/Au(3 nm) magnetic tunnel junction patterned into square pillars of lateral dimension: 50 mum and 5 mum. A significant MRE is observed, enhanced by the presence of an absorption edge associated with MgO, although the exact origin of the effect is unclear.
Keywords
colossal magnetoresistance; iron; magnesium compounds; magnetic tunnelling; Fe-MgO; absorption edge; colossal magnetoresistance; infrared magnetorefractive effect; magnetic tunnel junction; size 1.5 nm; size 3 nm; size 5 nm; thick granular tunnelling films; Infrared; magnetoresistance; tunnelling;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2008.2001676
Filename
4717700
Link To Document