Electric-field-induced insulator-metal transitions in thin films of charge-ordered rare-earth manganates

Authors
Ponnambalam, V Parashar, S Raju, AR Rao, CNR
Citation
V. Ponnambalam et al., Electric-field-induced insulator-metal transitions in thin films of charge-ordered rare-earth manganates, APPL PHYS L, 74(2), 1999, pp. 206-208
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
74
Issue
2
Year of publication
1999
Pages
206 - 208
Database
ISI
SICI code
0003-6951(19990111)74:2<206:EITITF>2.0.ZU;2-F
Abstract
Thin films of charge-ordered Nd0.5Ca0.5MnO3, Y0.5Ca0.5MnO3, and Nd0.5Sr0.5M nO3 have been prepared on Si(100) and LaAlO3(100) substrates by the nebuliz ed spray pyrolysis of organometallic precursors. Small electric fields indu ce insulator-metal transitions in the films with the resistivity decreasing with increasing current. The current-voltage characteristics are non-ohmic and show some hysteresis. The current-induced negative differential resist ance found in these manganate films could have potential technological appl ications. (C) 1999 American Institute of Physics. [S0003-6951(99)01402-3].