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在La0.7Sr0.3MnO3 (LSMO)纳米颗粒体系中, 采用高TC铁磁性的绝缘氧化物CoFe2O4(CF)以及低TC具有铁磁-顺磁转变的半金属体Nd0.7Sr0.3MnO3(NSMO)与之复合, 考察复合对磁电阻性能的影响. 结果表明, 两种复合均能够使MR得到大幅度的增强, LSMO/CF的增强出现在较高温度区域, 而LSMO/NSMO的增强出现在低温区域. 认为前者与自旋电子散射有关, 而后者是由于颗粒隧穿所致. 选择高TC铁磁性的化合物对纳米LSMO进行复合, 可望在室温区得到增强的磁电阻效应.
In the La0.7Sr0.3MnO3 (LSMO) nanoparticle system, the high TC ferromagnetic insulating oxide CoFe2O4 (CF) and the low TC ferromagnetic-paramagnetic transition metalloid Nd0.7Sr0.3MnO3 (NSMO) The results show that both of the two compounds can greatly enhance the MR, the enhancement of LSMO / CF appears in the higher temperature region, and the enhancement of LSMO / NSMO occurs in the low temperature region The former is believed to be related to spin-on electron scattering, which is due to particle tunneling, and the choice of compounds with high TC ferromagnetism to composite nanoscale LSMOs is expected to result in enhanced magnetoresistance effects at room temperature.