用脉冲激光沉积法在LaAlO3衬底上制备了La0.88Te0.12MnO3-δ(LTeMnO)薄膜.X射线衍射分析表明,薄膜具有钙钛矿赝立方结构,且沿(012)方向择优生长;电阻率-温度关系显示样品发生了金属绝缘体转变和庞磁电阻效应,转变温度为278K;在0.4T的磁场下,其磁电阻最大值为16.9%,对应的温度为223K.在绿激光作用下,光致电阻率变化最大值为13.2%;原因可能是激光作用影响了体系中载流子的浓度,进而影响了体系的自旋.
参考文献
| [1] | Jin S;Tuefel T H;Fasmacht R A et al.[J].Science,1994,264:413. |
| [2] | Von Helmoh R;Wecker J;Holzapfel B et al.[J].Physical Review Letters,1993,71:2331. |
| [3] | 陈钊,陈长乐,高国棉,温晓莉,李潭,王永仓,金克新,赵省贵.溶胶-凝胶法制备La0.7Ca0.3MnO3薄膜庞磁电阻效应和电流诱导电阻特性[J].功能材料,2005(04):549-551. |
| [4] | Coey JMD.;von Molnar S.;Viret M. .Mixed-valence manganites [Review][J].Advances in physics,1999(2):167-293. |
| [5] | Mandal P.;Das S. .TRANSPORT PROPERTIES OF CE-DOPED RMNO3 (R = LA, PR, AND ND) MANGANITES[J].Physical Review.B.Condensed Matter,1997(23):15073-15080. |
| [6] | Yanagida T;Kanki T;Bertr et al.[J].Journal of Applied Physics,2005,97:033905. |
| [7] | Sujoy R;Naushad A .[J].Journal of Applied Physics,2001,89(11):7425. |
| [8] | Tan GT.;Duan P.;Dai SY.;Zhou YL.;Lu HB.;Chen ZH. .Structural magnetic properties and spin-glass behavior in La0.9Te0.1MnO3[J].Journal of Applied Physics,2003(12):9920-9923. |
| [9] | Cheng TY;Hsieh CC;Juang JY;Lin JY;Wu KH;Uen TM;Gou YS;Hsu CH .The magneto-transport properties of epitaxial La0.7Sn0.3MnO3 manganite thin films[J].Physica, B. Condensed Matter,2005(1/4):141-146. |
| [10] | Gebhardt J R;Roy S;Ali N .[J].Journal of Applied Physics,1999,85(08):5390. |
| [11] | Liu X J;Moritomo Y;Machida A et al.[J].Physical Review B,2001,63(11):11510521. |
| [12] | Sheng Z G;Sun Y P;Dai J M et al.[J].Applied Physics Letters,2006,89(08):08250321. |
| [13] | Cauro R;Gilabert A;Contour J P et al.[J].Physical Review B,2001,63(17):1744-2321. |
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%