MAGNETIC-PROPERTIES AND COLOSSAL MAGNETORESISTANCE OF LA(CA)MNO3 MATERIALS DOPED WITH FE

Authors
AHN KH WU XW LIU K CHIEN CL
Citation
Kh. Ahn et al., MAGNETIC-PROPERTIES AND COLOSSAL MAGNETORESISTANCE OF LA(CA)MNO3 MATERIALS DOPED WITH FE, Physical review. B, Condensed matter, 54(21), 1996, pp. 15299-15302
Citations number
12
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
54
Issue
21
Year of publication
1996
Pages
15299 - 15302
Database
ISI
SICI code
0163-1829(1996)54:21<15299:MACMOL>2.0.ZU;2-J
Abstract
The effect of Fe doping (<20%) on the Mn site in the ferromagnetic (x= 0.37) and the antiferromagnetic (x=0.53) phases of La1-xCaxMnO3 has be en studied. The same ionic radii of Fe3+ and Mn3+ cause no structure c hange in either series yet conduction and ferromagnetism have been con sistently suppressed by Fe doping. Colossal magnetoresistance has been shifted to lower temperatures, and in some cases enhanced by Fe dopin g. Doping with Fe bypasses the usually dominant lattice effects, but d epopulates the hopping electrons and thus weakens the double exchange.