Effect of oxygen post-annealing on the magnetoresistance of highly epitaxial La0.7Ca0.3MnO3 thin films

被引：1
|
作者：
De Santis, A.
Barucca, G.
Bobba, F.
Caciuffo, R.
Froehlich, K.
Pripko, M.
Cucolo, A. M.
机构：
[1] Univ Salerno, Dept Phys ER Caianiello, I-84081 Baronissi, SA, Italy
[2] Univ Salerno, INFM, I-84081 Baronissi, SA, Italy
[3] Univ Politecn Marche, Dept Phys & Mat Engn, INFM Unit, I-60131 Ancona, Italy
[4] Slovak Acad Sci, Inst Elect Engn, Bratislava 84239, Slovakia
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷
关键词：
manganites; thin film; CMR;
D O I：
10.1016/j.jmmm.2003.12.288
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Epitaxial La0.7Ca0.3MnO3 (LCMO) thin films have been deposited by high pressure DC sputtering technique on SrTiO3 substrates. As-grown films exhibit metal - insulator transition temperature (T-MI) with values ranging from 131 to 220 K. The maximum value of the magnetoresistance is of about - 77% in a magnetic field of 0.5 T for T-MI = 131 K. The same films, annealed in a pure oxygen atmosphere, exhibit transitions to a metallic state at temperatures ranging from 210 to 284 K. Transmission electron microscopy analyses show a coherent growth between film and substrate. (C) 2003 Elsevier B. V. All rights reserved.
引用
收藏
页码：E1501 / E1502
页数：2
相关论文
共 50 条
  • [31] Influence of 90 MeV oxygen ion induced disorder on the magnetotransport in epitaxial La0.7Ca0.3MnO3 thin films
    Ogale, SB
    Ghosh, K
    Gu, JY
    Shreekala, R
    Shinde, SR
    Downes, M
    Rajeswari, M
    Sharma, RP
    Greene, RL
    Venkatesan, T
    Ramesh, R
    Bathe, R
    Patil, SI
    Ravikumar, R
    Arora, SK
    Mehta, GK
    JOURNAL OF APPLIED PHYSICS, 1998, 84 (11) : 6255 - 6261
  • [32] Low-field magnetoresistance hysteresis of magnetron sputtered La0.7Ca0.3MnO3 thin films
    Vlakhov, ES
    Dörr, K
    Müller, KH
    Handstein, A
    Eckert, D
    Nenkov, KA
    Chakalov, RA
    Chakalova, RI
    Spasov, AY
    NANO-CRYSTALLINE AND THIN FILM MAGNETIC OXIDES, 1999, 72 : 269 - 274
  • [33] Effect of post annealing on La0.7Sr0.3MnO3 thin films
    Cheng, W. F.
    Leung, C. W.
    ACTA PHYSICA POLONICA A, 2007, 111 (01) : 117 - 122
  • [34] Anisotropic magnetoresistance of La0.7Ca0.3MnO3 thin film biepitaxial step junctions
    Chen, S. F.
    Chang, W. J.
    Hsieh, C. C.
    Liu, S. J.
    Juang, J. Y.
    Wu, K. H.
    Uen, T. M.
    Lin, J. -Y.
    Gou, Y. S.
    JOURNAL OF APPLIED PHYSICS, 2006, 100 (11)
  • [35] Coexistence of large positive and negative magnetoresistance in La0.7Ca0.3MnO3 films with microcracks
    Zhu, Shaojiang
    Zhang, Fuchang
    Yuan, Jie
    Zhu, Beiyi
    Xu, Bo
    Cao, Lixin
    Qiu, Xianggang
    Zhao, Bairu
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2007, 313 (02) : 361 - 365
  • [36] Current-induced effect on the resistivity of epitaxial thin films of La0.7Ca0.3MnO3 and La0.85Ba0.15MnO3
    Gao, J
    Shen, SQ
    Li, TK
    Sun, JR
    APPLIED PHYSICS LETTERS, 2003, 82 (26) : 4732 - 4734
  • [37] Influence of strain and microstructure on magnetotransport in La0.7Ca0.3MnO3 thin films
    Thomas, KA
    de Silva, PSIPN
    Cohen, LF
    Hossain, A
    Rajeswari, M
    Venkatesan, T
    Hiskes, R
    MacManus-Driscoll, JL
    JOURNAL OF APPLIED PHYSICS, 1998, 84 (07) : 3939 - 3948
  • [38] Structural and electrical characterization of magnetoresistive La0.7Ca0.3MnO3 thin films
    De Santis, A
    Bobba, F
    Cristiani, G
    Cucolo, A
    Frohlich, K
    Habermeier, HU
    Salvato, M
    Vecchione, A
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2003, 262 (01) : 150 - 153
  • [39] Intrinsic and extrinsic pressure effects in La0.7Ca0.3MnO3 thin films
    Moshnyaga, V
    Klimm, S
    Gommert, E
    Tidecks, R
    Horn, S
    Samwer, K
    JOURNAL OF APPLIED PHYSICS, 2000, 88 (09) : 5305 - 5310
  • [40] Columnar defect induced phase transformation in epitaxial La0.7Ca0.3MnO3 films
    Ogale, SB
    Li, YH
    Rajeswari, M
    Riba, LS
    Ramesh, R
    Venkatesan, T
    Millis, AJ
    Kumar, R
    Mehta, GK
    Bathe, R
    Patil, SI
    JOURNAL OF APPLIED PHYSICS, 2000, 87 (09) : 4210 - 4215
12345