Research Paper

Structure, Magnetic and Electric Properties of Layered Perovskite LaSr2Mn2-x CuxO7

  • HAN Li-An ,
  • CHEN Chang-Le ,
  • GAO Guo-Mian
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  • Shaanxi key Laboratory of Condensed Matter Structures and Properties, Northnestam Polytechnical University, Xi’an 710072, China

Received date: 2007-01-05

  Revised date: 2007-03-16

  Online published: 2008-01-20

Abstract

Layered perovskite LaSr2Mn2-xCuxO7 polycrystalline samples were prepared by solid state reaction. Structure and magnetic as well as electric properties were nvestigated
by X-ray diffraction, superconductor quantum interference device and direct current four probe method. The samples have the single phase with layered perovskite structure and the space group is I4/mmm. The substitution of 10% copper destroys the charge order of LaSr2Mn2O7. Characteristic spin glass state occurs on the LaSr2MnxCuxO7, and the spin frozen temperature is near 225K. The electric properties show that the LaSr2Mn2O7 sample’s conduction characters are influenced by the substitution of 10% Cu, which keeps in the insulator state from 77K to room temperature. At the same time, transport properties are changed by the substitution of 10% copper. layered perovskite; LaSr2Mn 2-x CuxO7; magnetic properties; electrical properties

Cite this article

HAN Li-An , CHEN Chang-Le , GAO Guo-Mian . Structure, Magnetic and Electric Properties of Layered Perovskite LaSr2Mn2-x CuxO7[J]. Journal of Inorganic Materials, 2008 , 23(1) : 19 -22 . DOI: 10.3724/SP.J.1077.2008.00019

References

[1] Myron B Salamon, Marcelo Jaime. Rev. Mod. Phys., 2001, 73 (3): 583--628.
[2] 祝向荣, 沈鸿烈, 沈勤我, 等(Zhu Xiangrong, et al). 无机材料学报(Journal of Inorganic Materials), 1999, 14 (6): 915--920.
[3] Sunil Nair, Banerjee A. Phy. Rev. B, 2004, 70 (11): 104427--104431.
[4] Joongoe Dho, Kim W S, Hur N H. Phy. Rev. B, 2001, 65 (9): 24404--24409.
[5] Motitomo Y, Asamitsu A, Kuwahara H, et al. Nature, 1996, 380 (2): 141--144.
[6] Wilkins S B, Spencer P D, Beale T A. Phy. Rev. B, 2003, 67 (8): 205110--05114.
[7] Subhayan Biswas, Sandip Chatterjee, Chatterjee P, et al. Phy. Rev. B, 2002, 66 (7): 214403--2114409.
[8] Weigand F, Gold S, Schmid J, et al. Appl. Phy. Lett., 2002, 81 (9): 2035--2037.
[9] 鲁毅, 李庆安, 邸乃力, 等. 物理学报, 2003, 52 (6): 1520--1523.
[10] Sun J R, Rao G H, Gao X R, et al. J. Appl. Phy., 1999, 85(7): 3619--3622.
[11] Kallel N, Dezanneaub G, Dhahria J, et al. J. Magn. Magn. Mater., 2003, 261 (1): 56--65.
[12] Yuan X B, Liu Y H, Yin N, et al. J. Magn. Magn. Mater., 2006, 306 (2): 167--171.
[13] Mydosh J A. Spin glass. London: Taylor and Francis. 1993. 1--100.
[14] 陈春霞, 章建辉, 钱天, 等. 材料科学与工程学报, 2005, 23 (1): 23--27.
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