TY - JOUR
T1 - Magnetoresistance of spin glass NiMn/Ni thin film
AU - Ando, T.
AU - Sato, T.
AU - Ohta, E.
N1 - Funding Information:
Grant-in-Aid for Science Research from the Ministry of Education, Science and Culture, by The Kurata Foundation, by The Iketani 3cience a,d Technology Foundation, by The Murata Science Foundation, and by The Itoh Science Foundation.
PY - 1992/7/2
Y1 - 1992/7/2
N2 - We report magnetoresistance measurements on Ni1-xMnx/SiO2/Ni (x = 0.27, 0.28) films with various thickness of SiO2 layer as a function of field and temperature. In the temperature dependence of the magnetoresistance, we observed that the temperature Tf at which the disagreement between field cooled and zero field cooled data appears increased with decreasing thickness of SiO2 layer. Tf was higher than that of Ni73Mn27 film. This result suggests that the spin glass transition temperature Tg increased with decreasing thickness of SiO2 layer. The increase of Tg can be interpreted by magnetic interaction between magnetic moments in NiMn and Ni layers via conduction electrons leaking through the SiO2 layer.
AB - We report magnetoresistance measurements on Ni1-xMnx/SiO2/Ni (x = 0.27, 0.28) films with various thickness of SiO2 layer as a function of field and temperature. In the temperature dependence of the magnetoresistance, we observed that the temperature Tf at which the disagreement between field cooled and zero field cooled data appears increased with decreasing thickness of SiO2 layer. Tf was higher than that of Ni73Mn27 film. This result suggests that the spin glass transition temperature Tg increased with decreasing thickness of SiO2 layer. The increase of Tg can be interpreted by magnetic interaction between magnetic moments in NiMn and Ni layers via conduction electrons leaking through the SiO2 layer.
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U2 - 10.1016/0304-8853(92)91255-R
DO - 10.1016/0304-8853(92)91255-R
M3 - Article
AN - SCOPUS:0027109098
SN - 0304-8853
VL - 113
SP - 115
EP - 118
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 1-3
ER -