对巨磁电阻锰氧化物材料La2/3Ca1/3MnO3/YSZ(钇稳定氧化锆)(LCMO/YSZ)系列样品低温下电阻率行为进行研究,低温下电阻率行为一般是ρ=ρ0+ATa+BTb的形式,其中ρ0为剩余电阻率,a=2或3/2,b=5或9/2.T2代表电子-电子散射项,T3/2代表被无序自旋玻璃散射的电子项,T6代表电子.声子散射项,Tθ/2们代表电子-双磁子散射项.在此指出b=5是合理的,代表电子-声子散射项.
参考文献
| [1] | Baibich M;Broto J;Feat A et al.[J].Physical Review Letters,1988,61:2472. |
| [2] | Helmolt R von;Weeker J;Holzapfel B et al.[J].Physical Review Letters,1993,71:2331. |
| [3] | Jin S;Tidel T;McCormack M et al.[J].Science,1994,264:413. |
| [4] | Salamon MB.;Jaime M. .The physics of manganites: Structure and transport [Review][J].Reviews of Modern Physics,2001(3):583-628. |
| [5] | 袁松柳,夏正才,刘胜,李衷怡,彭刚,唐洁,张国宏,张力江,冯文,熊曹水.Electrical Transport and Low-Field Magnetoresistance in La2/3Ca1/3MnO3/YSZ Composites[J].中国物理快报(英文版),2002(08):1168-1171. |
| [6] | Urushibara A;Moritomo Y;Arima T et al.[J].Physical Review B,1995,51:14103. |
| [7] | Schiffer P;Ramirez A P;Bao W et al.[J].Physical Review Letters,1995,75:3336. |
| [8] | Mydosh J A.Spin glass:an experimental introduction[M].London:taylor and Francis,1993 |
| [9] | Jaime M;Lin P;Salamon M B;Han P D .[J].Physical Review B,1998,58:R5901-R5904. |
| [10] | Kenn Kubo;Nageo Ohata.A .[J].Journal of the Physical Society of Japan,1972,3:21. |
| [11] | Balcells LI;Fontcuberta J;Martnez B et al.[J].Physical Review B,1998,58:R14697-R14700. |
| [12] | 张炯,魏立国,张蕾,李定国,熊永红,熊曹水.Ag掺杂对La0.7Ca0.2Sr0.1MnO3室温磁电阻效应的增强[J].低温物理学报,2007(02):86-89. |
| [13] | Gupta A;Gong G Q;Xiao G et al.[J].Physical Review B,1996,54:R15629-R15632. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%