title: Preparation and characterization of chemically derived (Pb,La)TiO (3) thin films.
abstract: Ferroelectric lead lanthanum titanate (PLT) thin films with composition varying from pure PbTiO(3) to PLT 25/100 (0 to 25 mol.% La) were prepared by spin-casting 0.25M solutions containing metallo-organic precursors of Pb, La, and Ti. The dielectric and ferroelectric properties of the thin (410-nm) films were characterized. The dielectric constants of the films varied from ~80 to ~690 for La contents varying from 0 to 25 mol%, respectively. Dissipation factors varied from ~0.03 to ~0.09 over the same compositional range. The temperature dependence of the dielectric properties was also studied to determine the effects of La content on the Curie point (T(c)). As expected, T(c ) was found to decrease with increasing La concentration. Coercive field and remanent polarization also decreased with increased La concentration.
authors.affiliation: Sandia Nat. Lab., Albuquerque, NM.
authors.forename: R W
authors.initials: RW
authors.lastname: Schwartz
authors.forename: B A
authors.initials: BA
authors.lastname: Tuttle
authors.forename: D H
authors.initials: DH
authors.lastname: Doughty
authors.forename: C E
authors.initials: CE
authors.lastname: Land
authors.forename: D C
authors.initials: DC
authors.lastname: Goodnow
authors.forename: C L
authors.initials: CL
authors.lastname: Hernandez
authors.forename: T J
authors.initials: TJ
authors.lastname: Zender
authors.forename: S L
authors.initials: SL
authors.lastname: Martinez