Electrical transport and magnetic properties in La0.67Ca0.33MnO3 and CuFe2O4 composites

被引：16

作者：

Tian, Z. M. ^{[1
]}

Yuan, S. L. ^{[1
]}

Wang, Y. Q. ^{[1
]}

Liu, L. ^{[1
]}

Yin, S. Y. ^{[1
]}

Li, P. ^{[1
]}

Liu, K. L. ^{[1
]}

He, J. H. ^{[1
]}

Li, J. Q. ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2008年 / 150卷 / 01期

基金：

中国国家自然科学基金;

关键词：

magnetoresistance; ferromagnetic metal; magnetic coupling;

D O I：

10.1016/j.mseb.2008.01.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The (1 - x) La0.67Ca0.33MnO3/xCuFe(2)O(4) (X = 0, 0.04, 0.07, 0.10 and 0.15) composites have been prepared and investigated systematically for their microstructure, electrical and magnetic properties. The X-ray diffraction and scanning electronic microscopy analysis reveal that both La0.67Ca0.33MnO3 (LCMO) and CuFe2O4 phases are distributed in the composites. Compared with pure LCMO, an obvious enhancement of magnetoresistance is observed over a wide temperature range for the composites. Under 3T field, the magnetoresistance rises from a base value 44.5% for pure LCMO, to a maximum value of 66.7% for x=0.1 composite. Meanwhile, a weak temperature-dependent MR platform is observed in the temperature range from 210K to 240K. The MR enhancement is discussed in terms of spin-polarized intergrain tunneling due to enhanced magnetic disorder and magnetic coupling near boundaries between LCMO and CuFe2O4 grains. (C) 2008 Published by Elsevier B.V.

引用

页码：50 / 54

页数：5

共 50 条

[21] Effect of sintering temperature on electrical transport of La0.67Ca0.33MnO3 granular system with 4% CuO addition
Miao, J. H.
Yuan, S. L.
Ren, G. M.
Xiao, X.
Yu, G. Q.
Wang, Y. Q.
Yin, S. Y.
JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 448 (1-2) : 27 - 31
[22] Electrical Transport and Magnetoresistance of La0.67Ca0.33MnO3: Agx (x=0, 0.1, 0.2, 0.3, 0.4) Composites
Gencer, H.
Pektas, M.
Babur, Y.
Kolat, V. S.
Izgi, T.
Atalay, S.
JOURNAL OF MAGNETICS, 2012, 17 (03) : 176 - 184
[23] Magnetic and electrical transport properties on (La0.7Sr0.3MnO3)1-x/(CuFe2O4)x composites
Seo, Y. J.
Kim, G. W.
Sung, C. H.
Lee, C. G.
Koo, B. H.
2ND INTERNATIONAL SYMPOSIUM ON ADVANCED MAGNETIC MATERIALS AND APPLICATIONS (ISAMMA 2010), 2011, 266
[24] Comparison of magnetisation and transport properties of processed La0.67Ca0.33MnO3 manganites for technological application
Sahu D.R.
Mishra D.K.
International Journal of Nano and Biomaterials, 2018, 7 (03) : 201 - 209
[25] Improvement in electronic and magnetic transport of La0.67Ca0.33MnO3 manganites by optimizing sintering temperature
Jin, Fei
Zhang, Hui
Chen, Xiaohui
Liu, Xiang
Chen, Qingming
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2017, 81 (01) : 177 - 184
[26] Monte Carlo Simulation of Magnetotransport Properties in La0.67Ca0.33MnO3 (FM) and La0.33Ca0.67MnO3 (AF) Thin Films
Restrepo-Parra, E.
Bedoya-Hincapie, C. M.
Orozco-Hernandez, G.
Restrepo, J.
Jurado, J. F.
IEEE TRANSACTIONS ON MAGNETICS, 2011, 47 (12) : 4686 - 4694
[27] Magnetorefractive and Kerr effects in the [La0.67Ca0.33MnO3/La0.67Sr0.33MnO3]n superlattices
Sukhorukov, Yu. P.
Telegin, A. V.
Nosov, A. P.
Gan'shina, E. A.
Stepantsov, E. A.
Lombardi, F.
Winkler, D.
SUPERLATTICES AND MICROSTRUCTURES, 2014, 75 : 680 - 691
[28] Influence of the grain-size and oxygen stoichiometry on magnetic and transport properties of polycrystalline La0.67Ca0.33MnO3±δ perovskites
Hueso, LE
Rivadulla, F
Sanchez, RD
Caeiro, D
Jardon, C
Vazquez-Vazquez, C
Rivas, J
Lopez-Quintela, MA
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 189 (03) : 321 - 328
[29] Ultrafast optical detection of magnetic inhomogeneity in ferromagnetic La0.67Ca0.33MnO3
Gong, Y.
Zhang, Z.
Ascienzo, D.
Abranyos, Y.
Zhao, H. B.
Luepke, G.
Li, Qi
Ren, Y. H.
EPL, 2014, 108 (01)
[30] Evidence of ferrimagnetism in ferromagnetic La0.67Ca0.33MnO3 nanoparticle
Bhowmik, R. N.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2011, 323 (3-4) : 311 - 315

← 1 2 3 4 5 →