高级检索
无机材料学报

无机材料学报 >

2007 , Vol. 22 >Issue 2: 319 - 322

DOI: https://doi.org/10.3724/SP.J.1077.2007.00319

研究论文

(1-x)La2/3Ca 1/3 MnO 3/xSb2O 5复合体系的电子输运和磁电阻行为

  • 袁 力 ,
  • 缪菊红 ,
  • 王永强 ,
  • 刘 莉 ,
  • 袁松柳
展开
  • 华中科技大学 物理系, 武汉 430074

收稿日期: 2006-03-27

  修回日期: 2006-05-16

  网络出版日期: 2007-03-20

收起

Electrical Transport Behavior and Magnetoresistance Properties of (1-x)La2/3Ca 1/3 MnO 3/xSb2O 5 Composites

  • YUAN Li ,
  • MIAO Ju-Hong ,
  • WANG Yong-Qiang ,
  • LIU Li ,
  • YUAN Song-Liu
Expand

  • Department of Physics, Huazhong University of Science & Technology, Wuhan 430074, China

Received date: 2006-03-27

  Revised date: 2006-05-16

  Online published: 2007-03-20

Fold

摘要

用两步法制备了(1-x)La2/3Ca 1/3 MnO 3/xSb2O 5复合样品. 零场下电阻温度关系测量表明, 对x<3%范围, 随Sb2O5含量增加, 复合样品电阻率增大, 绝缘体-金属转变温度降低; 而对x>3%范围, 随Sb2O5含量增加, 复合样品电阻率减小, 绝缘体-金属转变温度提高. 磁电阻测量表明, 少量Sb2O5同La2/3 Ca1/3 MnO3复合, 可明显增强磁电阻效应.

关键词： 锰基钙钛矿氧化物; 复合; 磁电阻; 自旋极化隧道

本文引用格式

袁 力 , 缪菊红 , 王永强 , 刘 莉 , 袁松柳 . (1-x)La2/3Ca 1/3 MnO 3/xSb2O 5复合体系的电子输运和磁电阻行为[J]. 无机材料学报, 2007 , 22(2) : 319 -322 . DOI: 10.3724/SP.J.1077.2007.00319

Abstract

The composites with the nominal composition of (1-x)La2/3Ca 1/3 MnO 3/xSb2O 5 were fabricated. The study of temperature dependence of resistivity at zero field shows that the metal-insulator transition temperature (T p) and the resistivity of the composites are dependent on Sb2O5 addition level x. When x<3%, T p shifts towards low temperature and resistivity increases with the increase of x. But T p shifts towards high temperature and resistivity decreases with further increasing of x. The measurement for temperature dependence of magnetoresistance (MR) indicates that MR effect can be largely enhanced in the composites with small Sb2O5 addition.

Key words： perovskite manganites; composite; magnetoresistance; spin-polarized tunneling

参考文献

[1] Coey J M D, Viret M, Molnar S. von. Adv. Phys., 1999, 48 (2): 167-293.
[2] Vrnshibara A, Maritomo Y, Arima T, et al. Phys. Rev. B., 1995, 51 (20): 14103-14109.
[3] Hwang H Y, Cheong S W, Ong N P, et al. Phys. Rev. Lett., 1996, 77 (10): 2041-2044.
[4] 祝向荣,等(ZHU Xiang-Rong, et al). 无机材料学报(Journal of Inorganic Materials), 1999, 14 (6): 915-920.
[5] Balcells L I, Carrillo A E, Martinez B, et al. Appl. Phys. Lett., 1999, 74 (26): 4014-4016.
[6] Petrov D K, Krusin-Elbaum L, Sun J Z, et al. Appl. Phys. Lett., 1999, 75 (7): 995-997.
[7] Koster S A, Moshnyaga V, Samwer K, et al. Appl. Phys. Lett., 2002, 81 (9): 1648-1650.
[8] Yan C H, Huang Y H, Chen X, et al. J. Phys: Condens. Matter., 2002, 14 (41): 9607-9614.
[9] Gupta S, Ranjit R, Mitra C, et al. Appl. Phys. Lett., 2001, 78 (3): 362-364.
[10] Yuan S L, Xia Z C, Liu S, et al. Chin. Phys. Lett., 2002, 19 (8): 1168-1171.
[11] Huang Q, Li J, Huang X J, et al. J. Appl. Phys., 2001, 90 (6): 2924-2929.
[12] Yan C H, Xu Z G, Zhu T, et al. J. Appl. Phys., 2000, 87 (9): 5588-5590.
[13] 袁松柳,等(YUAN Song-Liu, et al). 无机材料学报(Journal of Inorganic Materials), 2005, 20 (3): 623-628.
[14] Huang Y H, Yan C H, Luo F, et al. Appl. Phys. Lett., 2002, 81 (1): 76-78.
[15] Yuan S L, Zhang G Q, Peng G, et al. J. Phys. : Condens. Matter., 2001, 13 (24): 5691-5697.
[16] Yan C H, Luo F, Huang Y H. J. Appl. Phys., 2002, 91 (10): 7406-7408.

[17] Hueso L E, Rivas J, Rivadulla F, et al. J. Appl. Phys., 1999, 86 (7): 3881-3884.
[18] Wang J, Han J T, Zhang X D, et al. Journal of Safety and Environment, 2004, 4 (6): 27-29.
[19] Yuan S L, Xia Z C, Liu L, et al. Phys. Rev. B., 2003, 68 (18): 184423-184427.
[20] Yuan S L, Tang J, Liu L, et al. Europhys. Lett., 2003, 63 (4): 433-439.

Options
文章导航

/

〈 〉