Magnetoresistance properties of 0.99La0.7(CaxSr1-x)0.3MnO3/0.01CuZnFe4O4 composites

被引：9

作者：

Bian, Jin Long ^{[1
]}

Seo, Yong Jun ^{[1
]}

Kim, Geun Woo ^{[1
]}

Sung, Chang Hoon ^{[1
]}

Kumar, Shalendra ^{[1
]}

Lee, Chan Gyu ^{[1
]}

Koo, Bon Heun ^{[1
]}

机构：

[1] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, South Korea

来源：

CERAMICS INTERNATIONAL | 2012年 / 38卷

关键词：

Grain boundaries; Magnetic properties; Magnetoresistance; Electrical transport; ENHANCED MAGNETORESISTANCE; TRANSPORT;

D O I：

10.1016/j.ceramint.2011.05.029

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The composites of 0.99La(0.7)(CaxSr1-x)(0.3)MnO3/0.01CuZnFe(4)O(4) (LCSMO/CZF) (x = 0, 0.1, 0.2, 0.3, 0.5, 0.7 and 1) were fabricated by conventional solid state reaction method, and their electrical transport and magnetoresistance (MR) properties were investigated by physical property measurement system (PPMS). The result of X-ray diffraction (XRD) and scanning electronic microscopy (SEM) indicated that no new phase appeared in the composites except LCSMO and CZF phases. CZF is mainly distributed at the grain boundaries and surfaces of the matrix. The resistivity of all the composites was measured in the range 100-350 K at 0 T, 0.5 T and 1 T magnetic field. Room temperature MR peak appears for the composites x = 0.03. The observed variation of MR with varying Ca and Sr concentration has been qualitatively. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：S439 / S442

页数：4

共 10 条

[1] Enhanced field sensitivity close to percolation in magnetoresistive La2/3Sr1/3MnO3/CeO2 composites [J].

Balcells, L ;

Carrillo, AE ;

Martínez, B ;

Fontcuberta, J .

APPLIED PHYSICS LETTERS, 1999, 74 (26) :4014-4016

[2] Spin-polarized transport and magnetoresistance in magnetic oxides [J].

Gupta, A ;

Sun, JZ .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :24-43

[3] Enhanced magnetoresistance in granular La2/3Ca1/3MnO3 polymer composites [J].

Huang, YH ;

Chen, X ;

Wang, ZM ;

Liao, CS ;

Yan, CH ;

Zhao, HW ;

Shen, BG .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) :7733-7735

[4] Spin-polarized intergrain tunneling in La-2/Sr-3(1)/3MnO3 [J].

Hwang, HY ;

Cheong, SW ;

Ong, NP ;

Batlogg, B .

PHYSICAL REVIEW LETTERS, 1996, 77 (10) :2041-2044

[5] Magnetoresistance of artificial La0.7Sr0.3MnO3 grain boundaries as a function of misorientation angle [J].

Isaac, SP ;

Mathur, ND ;

Evetts, JE ;

Blamire, MG .

APPLIED PHYSICS LETTERS, 1998, 72 (16) :2038-2040

[6] Synthesis and properties of nanograined La-Ca-manganite-Ni-ferrite composites [J].

Nayak, Bibhuti B. ;

Vitta, Satish ;

Bahadur, D. .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2007, 139 (2-3) :171-176

[7] Enhanced magnetoresistance in sintered granular manganite/insulator systems [J].

Petrov, DK ;

Krusin-Elbaum, L ;

Sun, JZ ;

Feild, C ;

Duncombe, PR .

APPLIED PHYSICS LETTERS, 1999, 75 (07) :995-997

[8] Electrical transport and magnetic properties in La0.67Ca0.33MnO3 and CuFe2O4 composites [J].

Tian, Z. M. ;

Yuan, S. L. ;

Wang, Y. Q. ;

Liu, L. ;

Yin, S. Y. ;

Li, P. ;

Liu, K. L. ;

He, J. H. ;

Li, J. Q. .

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2008, 150 (01) :50-54

[9] GIANT NEGATIVE MAGNETORESISTANCE IN PEROVSKITELIKE LA2/3BA1/3MNOX FERROMAGNETIC-FILMS [J].

VONHELMOLT, R ;

WECKER, J ;

HOLZAPFEL, B ;

SCHULTZ, L ;

SAMWER, K .

PHYSICAL REVIEW LETTERS, 1993, 71 (14) :2331-2333

[10] GIANT MAGNETORESISTANCE IN EPITAXIAL ND0.7SR0.3MNO3-DELTA THIN-FILMS [J].

XIONG, GC ;

LI, Q ;

JU, HL ;

MAO, SN ;

SENAPATI, L ;

XI, XX ;

GREENE, RL ;

VENKATESAN, T .

APPLIED PHYSICS LETTERS, 1995, 66 (11) :1427-1429

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