COLOSSAL MAGNETORESISTANCE IN PULSED LASER-DEPOSITED THIN CERAMIC FILMS

Authors
GANGOPADHYAY S CROSS RW ELLINER G JACKSON S JENNER AG GREENOUGH RD DYER PE BAO X METZGER RM PARKER MR
Citation
S. Gangopadhyay et al., COLOSSAL MAGNETORESISTANCE IN PULSED LASER-DEPOSITED THIN CERAMIC FILMS, Journal of magnetism and magnetic materials, 147(3), 1995, pp. 225-230
Citations number
22
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
147
Issue
3
Year of publication
1995
Pages
225 - 230
Database
ISI
SICI code
0304-8853(1995)147:3<225:CMIPLT>2.0.ZU;2-P
Abstract
Films of La100-xCaxMnO2, where x = 34, 40 and 50, with perovskite stru cture, have been prepared by pulsed laser deposition. The films are no n-epitaxial, polycrystalline and have cubic crystal structure at room temperature. The temperature variation of resistivity shows no evidenc e of an electrical phase transformation. The highest CMR observed is n ear 1800% at 55 K in a maximum applied field of 70 kOe (5600 kA/m). Th e results of temperature variation of susceptibility, hysteresis, resi stivity and CMR properties follow a self-consistent behaviour.