Enhanced low field magnetoresistance at room temperature in La0.7Sr0.3MnO3/SrTiO3(SrZrO3) composites

被引：16

作者：

Shlyakhtin, OA

Oh, YJ

Tretyakov, YD

机构：

[1] Korea Inst Sci & Technol, Div Mat Sci & Technol, Seoul 130650, South Korea

[2] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia

来源：

SOLID STATE COMMUNICATIONS | 2001年 / 117卷 / 04期

关键词：

magnetically ordered materials; chemical synthesis; crystal structure and symmetry; electronic transport;

D O I：

10.1016/S0038-1098(00)00452-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Enhanced room temperature magnetoresistance (1.5-2.5% at H = 100 Oe) is observed for composites La0.7Sr0.3MnO3/ SrMeO3 (Me = Ti, Zr) with compositions close to the percolation boundary. Firing of the mechanical mixture of La0.7Sr0.3MnO3, (LSM) and SrMeO3 at T = 900-1200 degreesC results in significant interaction between constituents and in the shift of the percolation threshold to higher LSM content. The values of enhanced magnetoresistance, observed near percolation boundaries, are poorly dependent on firing temperatures but differ significantly for different insulating components. (C) 2001 Published by Elsevier Science Ltd.

引用

收藏

页码：261 / 266

页数：6

相关论文

共 15 条

[1] Magnetotransport properties of nanometric La2/3Sr1/3MnO3 granular perovskites [J].

Balcells, L ;

Martínez, B ;

Sandiumenge, F ;

Fontcuberta, J .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2000, 211 (1-3) :193-199

[2] 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

[3] GMR applications [J].

Daughton, JM .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 192 (02) :334-342

[4] Magnetoresistance at artificial interfaces in epitaxial ferromagnetic thin films [J].

Fontcuberta, J ;

Bibes, M ;

Martínez, B ;

Trtik, V ;

Ferrater, C ;

Sánchez, F ;

Varela, M .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2000, 211 (1-3) :217-225

[5] Soft chemical synthesis and transport properties of La0.7Sr0.3MnO3 granular perovskites [J].

Huang, YH ;

Xu, ZG ;

Yan, CH ;

Wang, ZM ;

Zhu, T ;

Liao, CS ;

Gao, S ;

Xu, GX .

SOLID STATE COMMUNICATIONS, 2000, 114 (01) :43-47

[6] Chemical compatibility of RE1-xSrxMnO3±δ (RE = La, Pr, Nd, Gd, 0≤x≤0.5) with yttria stabilized zirconia solid electrolyte [J].

Kostogloudis, GC ;

Ftikos, C .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1998, 18 (12) :1707-1710

[7] Atomic structure, magnetism, and transport properties of damaged La0.67Ca0.33MnO3-δ processed via high-energy ball milling [J].

Liou, MB ;

Islam, S ;

Fatemi, DJ ;

Browning, VM ;

Gillespie, DJ ;

Harris, VG .

JOURNAL OF APPLIED PHYSICS, 1999, 86 (03) :1607-1610

[8]

Mahesh R, 1996, APPL PHYS LETT, V68, P2291, DOI 10.1063/1.116167

[9] Microscopic analysis of lanthanum strontium manganite yttria-stabilized zirconia interface [J].

Mitsuyasu, H ;

Eguchi, K ;

Arai, H .

SOLID STATE IONICS, 1997, 100 (1-2) :11-15

[10] 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