low-field tunnel-type MR;
sol-gel deposition;
buffer layer;
dead layer;
D O I:
10.1016/S0304-8853(00)01401-3
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Magnetotransport properties of La2/3Sr1/3MnO3 (LSMO) (1500 Angstrom)/YSZ (100-1500 Angstrom)/SiO2/Si (100) bilayers were investigated by low-field magnetotransport measurement at room temperature. It is observed that MR ratio of the films with a YSZ buffer layer (MR = 0.43 %) was much higher than those of the films without a buffer layer (MR = 0.21 %) The better results of the LSMO films with a YSZ diffusion barrier are deduced to be related to the improvement of microstructure of the films and the reduction of the interface reaction between the films and SiO2/Si (100) substrates. (C) 2001 Elsevier Science B.V. All rights reserved.