Infrared spectroscopy of CaTiO3, SrTiO3, BaTiO3, Ba0.5Sr0.5TiO3 thin films, and (BaTiO3)5/(SrTiO3)5 superlattice grown on SrRuO3/SrTiO3(001) substrates

Title: Infrared spectroscopy of CaTiO ₃, SrTiO ₃, BaTiO ₃, Ba _0.5Sr _0.5TiO ₃ thin films, and (BaTiO ₃) ₅/(SrTiO ₃) ₅ superlattice grown on SrRuO ₃/SrTiO ₃(001) substrates

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Abstract

We investigated infrared-active phonons of CaTiO3, SrTiO3, BaTiO3, and Ba0.5Sr0.5TiO3 thin films, and a (BaTiO3)5/(SrTiO3)5 artificial superlattice by a Fourier transform infrared spectrometer with a grazing angle (48{sup o}) incident reflectance method. The longitudinal phonon energies of the thin films were different from those of the bulk material due to the lattice strain of the substrate. The Ba0.5Sr0.5TiO3 thin film and (BaTiO3)5/(SrTiO3)5 superlattice showed different phonon modes due to structural discrepancies, even though their chemical compositions are similar. The Ba0.5Sr0.5TiO3 thin film showed a single phonon energy lying between the phonon energies of BaTiO3 and SrTiO3 thin films, while the (BaTiO3)5/(SrTiO3)5 superlattice well preserved the characteristic phonon modes of BaTiO3 and SrTiO3 thin films.

Authors:

Lee, Ho Nyung ^[1]; Seo, S. S. A. ^[2]; Noh, Tae Won ^[2]

ORNL
Seoul National University

Publication Date:: Sat Jan 01 00:00:00 EST 2005

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC)

OSTI Identifier:: 1003687

DOE Contract Number:: DE-AC05-00OR22725

Resource Type:: Journal Article

Resource Relation:: Journal Name: Thin Solid Films; Journal Volume: 486

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHEMICAL COMPOSITION; INFRARED SPECTROMETERS; PHONONS; SPECTROSCOPY; STRAINS; SUBSTRATES; SUPERLATTICES; THIN FILMS

Citation Formats


                    Lee, Ho Nyung, Seo, S. S. A., and Noh, Tae Won. Infrared spectroscopy of CaTiO3, SrTiO3, BaTiO3, Ba0.5Sr0.5TiO3 thin films, and (BaTiO3)5/(SrTiO3)5 superlattice grown on SrRuO3/SrTiO3(001) substrates.  United States: N. p., 2005. 
        Web.

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                    Lee, Ho Nyung, Seo, S. S. A., & Noh, Tae Won. Infrared spectroscopy of CaTiO3, SrTiO3, BaTiO3, Ba0.5Sr0.5TiO3 thin films, and (BaTiO3)5/(SrTiO3)5 superlattice grown on SrRuO3/SrTiO3(001) substrates.  United States.

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                    Lee, Ho Nyung, Seo, S. S. A., and Noh, Tae Won. Sat .  
        "Infrared spectroscopy of CaTiO3, SrTiO3, BaTiO3, Ba0.5Sr0.5TiO3 thin films, and (BaTiO3)5/(SrTiO3)5 superlattice grown on SrRuO3/SrTiO3(001) substrates".  United States.

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@article{osti_1003687,

  title        = {Infrared spectroscopy of CaTiO3, SrTiO3, BaTiO3, Ba0.5Sr0.5TiO3 thin films, and (BaTiO3)5/(SrTiO3)5 superlattice grown on SrRuO3/SrTiO3(001) substrates},

  author       = {Lee, Ho Nyung and Seo, S. S. A. and Noh, Tae Won},

  abstractNote = {We investigated infrared-active phonons of CaTiO3, SrTiO3, BaTiO3, and Ba0.5Sr0.5TiO3 thin films, and a (BaTiO3)5/(SrTiO3)5 artificial superlattice by a Fourier transform infrared spectrometer with a grazing angle (48{sup o}) incident reflectance method. The longitudinal phonon energies of the thin films were different from those of the bulk material due to the lattice strain of the substrate. The Ba0.5Sr0.5TiO3 thin film and (BaTiO3)5/(SrTiO3)5 superlattice showed different phonon modes due to structural discrepancies, even though their chemical compositions are similar. The Ba0.5Sr0.5TiO3 thin film showed a single phonon energy lying between the phonon energies of BaTiO3 and SrTiO3 thin films, while the (BaTiO3)5/(SrTiO3)5 superlattice well preserved the characteristic phonon modes of BaTiO3 and SrTiO3 thin films.},

  doi          = {},

  journal      = {Thin Solid Films},

  number       = ,

  volume       = 486,

  place        = {United States},

  year         = {Sat Jan 01 00:00:00 EST 2005},

  month        = {Sat Jan 01 00:00:00 EST 2005}

}

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Title: Infrared spectroscopy of CaTiO 3, SrTiO 3, BaTiO 3, Ba 0.5Sr 0.5TiO 3 thin films, and (BaTiO 3) 5/(SrTiO 3) 5 superlattice grown on SrRuO 3/SrTiO 3(001) substrates

Abstract

Citation Formats

Title: Infrared spectroscopy of CaTiO ₃, SrTiO ₃, BaTiO ₃, Ba _0.5Sr _0.5TiO ₃ thin films, and (BaTiO ₃) ₅/(SrTiO ₃) ₅ superlattice grown on SrRuO ₃/SrTiO ₃(001) substrates