以无机盐为原料,采用溶胶-凝胶法在Si衬底上制备了La1-xSrxMnOa (LSMO)薄膜.XRD和TEM测试表明LSMO薄膜呈现纳米多晶菱形钙钛矿结构,薄膜的(012)、(110)晶面间距分别为0.38nm、0.28nm.SEM分析表明LSMO薄膜表面平整、光滑致密.电学测试La1-xSrx MnO3/Si异质结的I-V特性曲线表明,随着Sr掺杂量的增加,同一偏压下的开启电压变小,当电压大于10V时,La1-xSrxMnO3/Si异质结的电流迅速增大,呈现传统的p-n结特征.
参考文献
[1] | Von Helmolt R;Wecker J;Holzapfel B .Giant negative magnetoresistance in perovskite like La2/3 Ba1/3 MnO3 ferromagnetic[J].Physical Review Letters,1993,71(14):2331. |
[2] | Jin S;Tiefel T H;McCormack M et al.Thousandfold change in resistivity in magnetoresistive La-Ca-Mn-O films[J].Science,1994,264(5157):413. |
[3] | Sun Shan;Zheng Yunxian .Introduction of the synthesis of perovskite-structure meterials[J].J Yanbian University:Natural Science,2008,34(02):117. |
[4] | 刘桂珍,周小荣,何永,周建.PLD技术在功能薄膜材料研究中的应用[J].中国水运(理论版),2007(12):44-45. |
[5] | Tsai Y T;Chang W J;Hsich C C et al.Phase seperation and persistent magnetic memeory effect in La0.625 Ca0.375-MnO3 and La0.375 Pr0.25 Ca0.375 MnO3 films[J].Journal of Applied Physics,2009,105(01):013705. |
[6] | Y. Bason;J. Hoffman;C. H. Ahn;L. Klein .Magnetoresistance tensor of La0.8Sr0.2MnO3[J].Physical review, B. Condensed matter and materials physics,2009(9):092406:1-092406:4. |
[7] | Wadati H;Chikamatsu A;Kumigashira H et al.In situ photoemission study of Nb1-x Srx MnO3 epitaxial thin films[J].Physical Review B:Condensed Matter,2009,79(15):153106. |
[8] | Cheng Z X;Zhen H F;Li A H et al.Kimura CMR La0.7-Ca0.3MnO3 and La0.7Sr0.3 MnO3 thin films fabricated by solgel method[J].Journal of Crystal Growth,2008,275(1-2):2415. |
[9] | 王中林;康振川.功能与智能材料-结构演化与结构分析[M].北京:科学出版社,2002 |
[10] | 胡春国,赵振波,肖德海,李静,杨向光.La1-xSrxMnO3复合氧化物制备、表征和苯完全催化氧化性能[J].应用化学,2009(01):11-14. |
[11] | Mahendiran R.;Raychaudhuri AK.;Ramakrishnan TV.;Mahesh R. Rangavittal N.;Rao CNR.;Tiwary SK. .STRUCTURE, ELECTRON-TRANSPORT PROPERTIES, AND GIANT MAGNETORESISTANCE OF HOLE-DOPED LAMNO3 SYSTEMS[J].Physical Review.B.Condensed Matter,1996(6):3348-3358. |
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