Dielectric and microstructural properties of barium titanate hafnate thin films

Jon F. Ihlefeld, William J. Borland, Jon-Paul Maria

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Barium titanate hafnate (BaTi1-xHfxO3, 0 ≤ x ≤ 0.25) thin films have been deposited by a chemical solution method on copper foil substrates. The films were crystallized at 900 °C and in a reducing atmosphere to prevent substrate oxidation. Perovskite phase formation was identified for each composition, accompanied by an increased pseudocubic lattice parameter. Temperature dependent dielectric measurements revealed a decreasing phase transition temperature and peak permittivity with increasing hafnium level. The decrease in permittivity resulted from grain size reduction with increasing hafnium content. Compositions containing 25 mol% barium hafnate display a deviation from Curie-Weiss behavior indicating the onset of relaxor behavior.

Original languageEnglish (US)
Pages (from-to)3162-3166
Number of pages5
JournalThin Solid Films
Volume516
Issue number10
DOIs
StatePublished - Mar 31 2008

Fingerprint

Hafnium
Barium titanate
hafnium
barium
dielectric properties
Permittivity
permittivity
Thin films
Substrates
Barium
thin films
Chemical analysis
Perovskite
Metal foil
Superconducting transition temperature
Lattice constants
Copper
foils
lattice parameters
grain size

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Ihlefeld, Jon F. ; Borland, William J. ; Maria, Jon-Paul. / Dielectric and microstructural properties of barium titanate hafnate thin films. In: Thin Solid Films. 2008 ; Vol. 516, No. 10. pp. 3162-3166.
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Dielectric and microstructural properties of barium titanate hafnate thin films. / Ihlefeld, Jon F.; Borland, William J.; Maria, Jon-Paul.

In: Thin Solid Films, Vol. 516, No. 10, 31.03.2008, p. 3162-3166.

Research output: Contribution to journalArticle

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