OBSERVATION OF A NEW-TYPE OF GIANT MAGNETORESISTANCE WITH POSSIBLE SENSOR APPLICATIONS

Authors
OVEREND N NOGARET A GALLAGHER BL MAIN PC HENINI M WIRTZ R NEWBURY R MARROWS C HOWSON MA BEAUMONT SP
Citation
N. Overend et al., OBSERVATION OF A NEW-TYPE OF GIANT MAGNETORESISTANCE WITH POSSIBLE SENSOR APPLICATIONS, Materials science & engineering. B, Solid-state materials for advanced technology, 51(1-3), 1998, pp. 216-218
Citations number
6
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Materials science & engineering. B, Solid-state materials for advanced technology → ACNP
ISSN journal
09215107
Volume
51
Issue
1-3
Year of publication
1998
Pages
216 - 218
Database
ISI
SICI code
0921-5107(1998)51:1-3<216:OOANOG>2.0.ZU;2-7
Abstract
We demonstrate the existence of a new type of giant magnetoresistance (GMR) in hybrid semiconductor/ferromagnetic devices. We observe up to a similar to 1000% increase in resistance for applied fields of only s imilar to 100 mT at a temperature of 4 K and similar to 1% at 300 K. T he GMR has a strong angular dependence and it can also be strongly hys teretic. Optimisation of device parameters is expected to increase con siderably the magnitude of GMR. Such devices may have applications as magnetic sensors and memories. (C) 1998 Elsevier Science S.A. All righ ts reserved.