TY - JOUR
T1 - Tunnel magnetoresistance in magnetic tunnel junctions with Co2Fe (Al, Si) full-Heusler films
AU - Tezuka, N.
AU - Ikeda, N.
AU - Miyazaki, A.
AU - Okamura, S.
AU - Kikuchi, M.
AU - Sugimoto, S.
AU - Inomata, K.
N1 - Funding Information:
This work was partly supported by the IT-Program RR2002 from MEXT and Industrial Technology Research Grant in ‘0* from New Energy and Industrial Technology Development Organization of Japan.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007/3
Y1 - 2007/3
N2 - The magnetoresistance effect for a magnetic tunnel junction (MTJ) with Co2FeAl0.5Si0.5 electrodes on Cr buffered MgO (0 0 1) substrate has been investigated. The MTJ with B2-type Co2FeAl0.5Si0.5 electrode exhibited tunnel magnetoresistance (TMR) ratio of 76% at room temperature (RT) and 106% at 5 K, while that with L21 structure showed 51% and 78% at RT and 5 K, respectively. For both cases, the bias voltage dependence of TMR ratio is almost the same, but only for the MTJs with a Co2FeAl0.5Si0.5 electrode annealed at 600 °C shows a dip around -200 mV.
AB - The magnetoresistance effect for a magnetic tunnel junction (MTJ) with Co2FeAl0.5Si0.5 electrodes on Cr buffered MgO (0 0 1) substrate has been investigated. The MTJ with B2-type Co2FeAl0.5Si0.5 electrode exhibited tunnel magnetoresistance (TMR) ratio of 76% at room temperature (RT) and 106% at 5 K, while that with L21 structure showed 51% and 78% at RT and 5 K, respectively. For both cases, the bias voltage dependence of TMR ratio is almost the same, but only for the MTJs with a Co2FeAl0.5Si0.5 electrode annealed at 600 °C shows a dip around -200 mV.
KW - Full-Heusler
KW - Half metallic ferromagnet
KW - Magnetic tunnel junction
KW - Tunnel magnetoresistance
UR - http://www.scopus.com/inward/record.url?scp=33847626302&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847626302&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2006.10.812
DO - 10.1016/j.jmmm.2006.10.812
M3 - Article
AN - SCOPUS:33847626302
VL - 310
SP - 1940
EP - 1942
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 2 SUPPL. PART 3
ER -