Room temperature magnetoresistive sensor based on thick films manganese perovskite

被引：12

作者：

Balcells, L ^{[1
]}

Carrillo, AE ^{[1
]}

Martínez, B ^{[1
]}

Sandiumenge, F ^{[1
]}

Fontcuberta, J ^{[1
]}

机构：

[1] CSIC, Inst Ciencia Mat, Bellaterra 08193, Catalunya, Spain

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2000年 / 221卷 / 1-2期

关键词：

manganese perovskites; ferromagnetic transition; thick films;

D O I：

10.1016/S0304-8853(00)00389-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

La(2/3)Sr(1/3)MnO(3) perovskite (LSMO), which shows a ferromagnetic transition above room temperature, is a good candidate to be used as a magnetoresistive sensor. Magnetic and transport properties of granular LSMO have been studied. Different grain size and the use of metal/insulator composites have been explored in order to optimize the magnetoresistive response. LSMO ceramic powder have been used to prepare thick films on polycrystalline Al(2)O(3) substrates by screen printing. The magnetoresistive response of the grown thick films is analyzed in the range of technical fields. It is shown, that under appropriate conditions, materials having field sensitivity high enough for some applications at room temperature can be obtained. A magnetic sensor has been developed in order to show the feasibility of this material as a low-cost magnetic sensor. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：224 / 230

页数：7

共 20 条

[1] Manganese perovskites: Thick-film based position sensors fabrication [J].

Balcells, L ;

Enrich, R ;

Mora, J ;

Calleja, A ;

Fontcuberta, J ;

Obradors, X .

APPLIED PHYSICS LETTERS, 1996, 69 (10) :1486-1488

[2] Low-temperature magnetotransport in nanometric half-metallic ferromagnetic perovskites [J].

Balcells, L ;

Martínez, B ;

Sandiumenge, F ;

Fontcuberta, J .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2000, 12 (13) :3013-3018

[3] High-field magnetoresistance at interfaces in manganese perovskites [J].

Balcells, L ;

Fontcuberta, J ;

Martínez, B ;

Obradors, X .

PHYSICAL REVIEW B, 1998, 58 (22) :14697-14700

[4] 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

[5] Magnetic surface effects and low-temperature magnetoresistance in manganese perovskites [J].

Balcells, LL ;

Fontcuberta, J ;

Martinez, B ;

Obradors, X .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1998, 10 (08) :1883-1890

[6] Magnetoresistance of chromium dioxide powder compacts [J].

Coey, JMD ;

Berkowitz, AE ;

Balcells, L ;

Putris, FF ;

Barry, A .

PHYSICAL REVIEW LETTERS, 1998, 80 (17) :3815-3818

[7] Screen printed La2/3Sr1/3MnO3 thick films on alumina substrates [J].

Durand, L ;

Balcells, L ;

Calleja, A ;

Fontcuberta, J ;

Obradors, X .

JOURNAL OF MATERIALS RESEARCH, 1998, 13 (09) :2623-2631

[8] Magnetic properties of colossal magnetoresistive manganese oxides [J].

Fontcuberta, J ;

Martinez, B ;

Seffar, A ;

Pinol, S ;

Roig, A ;

Molins, E ;

Obradors, X ;

Alonso, J ;

GonzalezCalbet, JM .

JOURNAL OF APPLIED PHYSICS, 1996, 79 (08) :5182-5184

[9] Colossal magnetoresistance of ferromagnetic manganites: Structural tuning and mechanisms [J].

Fontcuberta, J ;

Martinez, B ;

Seffar, A ;

Pinol, S ;

GarciaMunoz, JL ;

Obradors, X .

PHYSICAL REVIEW LETTERS, 1996, 76 (07) :1122-1125

[10] Chemical tuning of the colossal magnetoresistance of ferromagnetic perovskites [J].

Fontcuberta, J ;

Martinez, B ;

Seffar, A ;

Pinol, S ;

GarciaMunoz, JL ;

Obradors, X .

EUROPHYSICS LETTERS, 1996, 34 (05) :379-384

← 1 2 →