Citation
Le. Hueso et al., Intergranular effects on nanocrystalline manganese perovskites, B S ESP CER, 39(3), 2000, pp. 259-262
Citations number
18
Categorie Soggetti
Material Science & Engineering
Journal title
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
ISSN journal
03663175
→ ACNP
Volume
39
Issue
3
Year of publication
2000
Pages
259 - 262
Database
ISI
SICI code
0366-3175(200005/06)39:3<259:IEONMP>2.0.ZU;2-K
Abstract
Intergranular magnetotransport effects are studied on polycrystalline manga
nites. Reducing grain size through sol-gel technology allows us to show new
results on these materials. Intrinsic colossal magnetoresistance is destro
yed in metal-insulator phase transition for grain size smaller than 150 nm.
In low temperature region, that is, T<30K, semiconductor resistivity behav
ior indicates Coulomb blockade between grains.