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Large positive magnetoresistance effect in metal-insulator nanocomposites in weak magnetic fields
- Source :
- Physics of the Solid State. 45:529-533
- Publication Year :
- 2003
- Publisher :
- Pleiades Publishing Ltd, 2003.
-
Abstract
- Studies of the magnetoresistance of granular Fe/SiO2 films within the compositional range corresponding to insulators revealed a large positive magnetoresistance. The positive magnetoresistance reaches 10% in magnetic fields ∼100 Oe at room temperature and exhibits slow response times (∼2 min) to stepped magnetic-field variation. The nature of the effect is apparently associated with the influence of ferromagnetic cluster aggregates of iron nanoparticles on the magnetoresistance.
Details
- ISSN :
- 10906460 and 10637834
- Volume :
- 45
- Database :
- OpenAIRE
- Journal :
- Physics of the Solid State
- Accession number :
- edsair.doi...........c6493b137504d4cd2e5f5f494b4c4c63