TY - JOUR
T1 - Magnetoresistance oscillations in double ferromagnetic tunnel junctions with layered ferromagnetic nanoparticles
AU - Nakajima, K.
AU - Saito, Y.
AU - Nakamura, S.
AU - Inomata, K.
N1 - Funding Information:
The authors would like to thank the National Science Council of the Republic of China, Taiwan for financially supporting this research under Contract No. NSC 95-2622-H-264-001-CC3.
PY - 2000/9
Y1 - 2000/9
N2 - Tunnel magnetoresistance in double tunnel junctions with layered ferromagnetic nanoparticles was investigated. The sample comprises two ferromagnetic electrodes (CoFe/Fe) separated by an Al2O3 insulating layer in which layered Co80Pt20 nanoparticles are embedded. The nanopartices are ellipsoidal with an average diameter of 3.7 nm, and composes a well-defined layer. At 10 K, we observed magnetoresistance oscillation with respect to the bias voltage. The observed TMR oscillation, with a period of 1.6 mV, accompanied oscillations of the conductance. We consider that the conductance oscillation may originate from the single electron charging effect.
AB - Tunnel magnetoresistance in double tunnel junctions with layered ferromagnetic nanoparticles was investigated. The sample comprises two ferromagnetic electrodes (CoFe/Fe) separated by an Al2O3 insulating layer in which layered Co80Pt20 nanoparticles are embedded. The nanopartices are ellipsoidal with an average diameter of 3.7 nm, and composes a well-defined layer. At 10 K, we observed magnetoresistance oscillation with respect to the bias voltage. The observed TMR oscillation, with a period of 1.6 mV, accompanied oscillations of the conductance. We consider that the conductance oscillation may originate from the single electron charging effect.
KW - Double tunnel junction
KW - Nanoparticle
KW - Single electron tunneling effect
KW - Tunnel magnetoresistance
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U2 - 10.1109/20.908595
DO - 10.1109/20.908595
M3 - Conference article
AN - SCOPUS:0034260633
SN - 0018-9464
VL - 36
SP - 2806
EP - 2808
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 5 I
T2 - 2000 International Magnetics Conference (INTERMAG 2000)
Y2 - 9 April 2000 through 12 April 2000
ER -