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Titolo:
Spin-dependent CPP transport in SnOx/Co multilayers
Autore:
Matsuyama, K; Sawamoto, Y; Nishihata, K;
Indirizzi:
Kyushu Univ 36, Dept Elect Device Engn, Fukuoka 81281, Japan Kyushu Univ 36 Fukuoka Japan 81281 ect Device Engn, Fukuoka 81281, Japan
Titolo Testata:
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
, volume: 199, anno: 1999,
pagine: 61 - 63
SICI:
0304-8853(199906)199:<61:SCTISM>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Keywords:
spin-dependent transport; semiconductive oxide; thin film; current perpendicular to plane;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
5
Recensione:
Indirizzi per estratti:
Indirizzo: Matsuyama, K Kyushu Univ 36, Dept Elect Device Engn, Fukuoka 81281, Japan Kyushu Univ 36 Fukuoka Japan 81281 gn, Fukuoka 81281, Japan
Citazione:
K. Matsuyama et al., "Spin-dependent CPP transport in SnOx/Co multilayers", J MAGN MAGN, 199, 1999, pp. 61-63

Abstract

In this article, we report on a spin-dependent CPP transport observed in novel semiconductive-oxide/ferromagnet multilayers of [SnOx(t nm)/Co(30 nm)/SnOx(t nm)/Co(2 nm)/NiFe(16 nm)/Co(2 nm)] x 9, deposited with a multi-target magnetron sputtering system. The measured electrical conductivity a showsa linear behaviour in the ln(sigma) vs. T-1 plot at the temperature range of 120 < T < 170 K, which demonstrates thermionic electron transport through the SnOx layer. The thermal activation energy for the transport was evaluated as an order of 0.01 erg from the linear part of the plot. Though the values of a show marked scattering, the mean value decreases from +3.0 x 10(-3) (t = 4 nm) to -3.5 x 10(-3) (t = 32 nm) with the increase of t. Negative magnetoresistance was observed in two orthogonal directions of in-plane external fields. An MR ratio of 0.24% (Delta R = 0.20 Omega, R-s = 83 Omega)is observed at room temperature for the multilayer with t = 16 nm, where the saturation field is 350 Oe. (C) 1999 Elsevier Science B.V. All rights reserved.

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Documento generato il 07/04/20 alle ore 22:39:36