TY - JOUR
T1 - Giant magnetic tunneling effect in Fe/Al2O3/Fe junction
AU - Miyazaki, T.
AU - Tezuka, N.
N1 - Funding Information:
Research was partly supported by the Sasakawa Scientific Research Grant from the Japan Science Society.
PY - 1995/1/2
Y1 - 1995/1/2
N2 - A giant magnetoresistance ratio of 30% at 4.2 K and 18% at 300 K was observed for the first time in an Fe/Al2O3/Fe junction. The conductance at room temperature was expressed well by G=96.2 (1 + 0.09 cos θ)(Ω-1), where θ is the angle between the magnetizations of two iron electrodes. The dependence of the magnetoresistance ratio, saturated resistance and also the tunneling current on temperature were measured in the range 4.2-300 K. The results support the claim that the giant magnetoresistance is due to the magnetic tunneling of electrons between the electrodes through the thin Al2O3 insulator.
AB - A giant magnetoresistance ratio of 30% at 4.2 K and 18% at 300 K was observed for the first time in an Fe/Al2O3/Fe junction. The conductance at room temperature was expressed well by G=96.2 (1 + 0.09 cos θ)(Ω-1), where θ is the angle between the magnetizations of two iron electrodes. The dependence of the magnetoresistance ratio, saturated resistance and also the tunneling current on temperature were measured in the range 4.2-300 K. The results support the claim that the giant magnetoresistance is due to the magnetic tunneling of electrons between the electrodes through the thin Al2O3 insulator.
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U2 - 10.1016/0304-8853(95)90001-2
DO - 10.1016/0304-8853(95)90001-2
M3 - Letter
AN - SCOPUS:0029632353
VL - 139
SP - L231-L234
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 3
ER -