ANISOTROPY OF ELECTRICAL-PROPERTIES IN ALPHA-FE2O3 CERAMICS

Authors
SANTILLI CV BONNET JP DORDOR P ONILLON M
Citation
Cv. Santilli et al., ANISOTROPY OF ELECTRICAL-PROPERTIES IN ALPHA-FE2O3 CERAMICS, Journal of Materials Science, 28(22), 1993, pp. 6029-6034
Citations number
12
Categorie Soggetti
Material Science
Journal title
Journal of Materials Science → ACNP
ISSN journal
00222461
Volume
28
Issue
22
Year of publication
1993
Pages
6029 - 6034
Database
ISI
SICI code
0022-2461(1993)28:22<6029:AOEIAC>2.0.ZU;2-P
Abstract
Electrical conductivity and thermoelectric power measurements carried out in a heamatite ceramic showed a strong anisotropy in directions no rmal and parallel to the uniaxial pressing direction. This behaviour i s similar to that verified in alpha-Fe2O3 single crystal. The results suggest that the extended structural defects, generated during sinteri ng, disturb the magnetic order on the (001) planes of alpha-Fe2O3 and limit the mobility of n type carriers.