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Applied Physics A

, Volume 80, Issue 3, pp 607–610 | Cite as

Raman scattering study of La-, Nd- and Sm-substituted Bi4Ti3O12

  • D. WuEmail author
  • Y. Deng
  • C.L. Mak
  • K.H. Wong
  • A.D. Li
  • M.S. Zhang
  • N.B. Ming
Article

Abstract

Raman modes of bismuth-layered perovskite Bi4-xLaxTi3O12 ceramic samples were studied as a function of La content from x=0.00 to 0.75. In the low-wavenumber region (35∼150 cm-1), the rigid mode was found to be insensitive to La substitution, while the compositional change caused a frequency upshift of one of the soft modes. In the high-wavenumber region, the results indicated that a structure transition from orthorhombic to tetragonal may occur above x=0.75, since the B2g and B3g modes showed evidence of coalescence into Eg modes with increasing La content. Raman spectra of Bi3.25Nd0.75Ti3O12 and Bi3.25Sm0.75Ti3O12 are presented and compared with Bi4-xLaxTi3O12.

Keywords

Thin Film Operating Procedure Perovskite Raman Spectrum Electronic Material 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • D. Wu
    • 1
    • 2
    Email author
  • Y. Deng
    • 3
  • C.L. Mak
    • 2
  • K.H. Wong
    • 2
  • A.D. Li
    • 1
  • M.S. Zhang
    • 4
  • N.B. Ming
    • 3
  1. 1.National Laboratory of Solid State Microstructures and Department of Materials Science and EngineeringNanjing UniversityNanjingChina
  2. 2.Department of Applied Physicsthe Hong Kong Polytechnic UniversityKowloonChina
  3. 3.National Laboratory of Solid State Microstructures and Department of PhysicsNanjing UniversityNanjingChina
  4. 4.National Laboratory of Solid State Microstructures and Center for Materials AnalysisNanjing UniversityNanjingChina

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