Detection of an Infrared Magnetorefractive Effect From a Layered Fe/MgO/Fe Magnetic Tunnel junction

TY - JOUR

T1 - Detection of an Infrared Magnetorefractive Effect From a Layered Fe/MgO/Fe Magnetic Tunnel junction

AU - Mennicke, R. T.

AU - Berryman, R.

AU - Matthew, J. A. D.

AU - Thompson, S. M.

AU - Yakushiji, K.

AU - Ernult, F.

AU - Mitani, S.

AU - Takanashi, K.

PY - 2008/11

Y1 - 2008/11

N2 - 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)/MgO(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 pm and 5 mu m. 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.

AB - 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)/MgO(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 pm and 5 mu m. 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.

KW - Infrared

KW - magnetoresistance

KW - tunnelling

UR - http://www.scopus.com/inward/record.url?scp=63749102190&partnerID=8YFLogxK

U2 - 10.1109/TMAG.2008.2001676

DO - 10.1109/TMAG.2008.2001676

M3 - Article

SN - 0018-9464

VL - 44

SP - 2566

EP - 2568

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 11

ER -