Magnetic position sensor based on nanocrystalline colossal magnetoresistances

Authors
Gonzalez, OJ Castano, E Castellano, JC Gracia, FJ
Citation
Oj. Gonzalez et al., Magnetic position sensor based on nanocrystalline colossal magnetoresistances, SENS ACTU-A, 92(1-3), 2001, pp. 137-143
Citations number
8
Categorie Soggetti
Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS A-PHYSICAL
ISSN journal
09244247 → ACNP
Volume
92
Issue
1-3
Year of publication
2001
Pages
137 - 143
Database
ISI
SICI code
0924-4247(20010801)92:1-3<137:MPSBON>2.0.ZU;2-V
Abstract
A new magnetic position sensor based on colossal magnetoresistances has bee n constructed. The sensor element was La0.67Sr0.33MnO3 thin films patterned in a Wheatstone bridge configuration. It displayed a magnetoresistance of similar to1.27% at 2.6 kOe and a sensitivity of 70.66 muV/V per degree. It has no friction, therefore, this device presents a long life characteristic and does not introduce electrical noise. The experimental results confirm that the properties of these materials are suited for the development of co ntactless potentiometers. (C) 2001 Elsevier Science B.V. All rights reserve d.