TY - JOUR
T1 - Influence of interlayer roughness on magnetoresistive effect of ferromagnetic tunneling junctions
AU - Ando, Y.
AU - Yokota, M.
AU - Tezuka, N.
AU - Miyazaki, T.
N1 - Funding Information:
This research is supported by Asahigarasu, Mitsubishi and Yazaki foundations, Storage Research Consortium (SRC), International Joint Research (NEDO) and Grant-in-Aid for Scientific Research (No. 084505001 and Priority Areas No. 09236101) from the Ministry of Education, Science, Sports and Culture of Japan.
PY - 1999/6/1
Y1 - 1999/6/1
N2 - Ferromagnetic tunneling 80NiFe/Co/Al-oxide/Co junctions with wedge shaped Al-oxide were fabricated. For preparing Al-oxide, pure Al was sputtered without exposure. The tunnel resistance for junctions with sufficiently oxidized Al increased exponentially with increasing dAl. On the other hand, the tunnel resistance for junctions with an air-leak scattered. The tunneling magnetoresistive effect (TMR) was observed at about 7 angstroms Al for junctions without exposure. The surface roughness of the sample without exposure was quite small, while that with an air-leak tended to be large with increasing oxidization time and also dAl. The corresponding tunnel resistance was very small for the junction with the rough interface.
AB - Ferromagnetic tunneling 80NiFe/Co/Al-oxide/Co junctions with wedge shaped Al-oxide were fabricated. For preparing Al-oxide, pure Al was sputtered without exposure. The tunnel resistance for junctions with sufficiently oxidized Al increased exponentially with increasing dAl. On the other hand, the tunnel resistance for junctions with an air-leak scattered. The tunneling magnetoresistive effect (TMR) was observed at about 7 angstroms Al for junctions without exposure. The surface roughness of the sample without exposure was quite small, while that with an air-leak tended to be large with increasing oxidization time and also dAl. The corresponding tunnel resistance was very small for the junction with the rough interface.
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U2 - 10.1016/S0304-8853(98)01053-1
DO - 10.1016/S0304-8853(98)01053-1
M3 - Conference article
AN - SCOPUS:0032673192
SN - 0304-8853
VL - 198
SP - 155
EP - 157
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
T2 - Proceedings of the 1998 3rd International Symposium on Metallic Multilayers (MML-98)
Y2 - 14 June 1998 through 19 June 1998
ER -