Raman scattering study of La-, Nd- And Sm-substituted Bi4Ti 3O12

D. Wu; Y. Deng; Chee Leung Mak; K. H. Wong; A. D. Li; M. S. Zhang; N. B. Ming

doi:10.1007/s00339-003-2244-z

Raman scattering study of La-, Nd- And Sm-substituted Bi₄Ti ₃O₁₂

D. Wu, Y. Deng, Chee Leung Mak, K. H. Wong, A. D. Li, M. S. Zhang, N. B. Ming

Research output: Journal article publication › Journal article › Academic research › peer-review

30 Citations (Scopus)

Abstract

Raman modes of bismuth-layered perovskite Bi4-xLa xTi3O12 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 Bi 3.25Nd0.75Ti3O12 and Bi 3.25Sm0.75Ti3O12 are presented and compared with Bi4-xLaxTi3O12.

Original language	English
Pages (from-to)	607-610
Number of pages	4
Journal	Applied Physics A: Materials Science and Processing
Volume	80
Issue number	3
DOIs	https://doi.org/10.1007/s00339-003-2244-z
Publication status	Published - 1 Feb 2005

ASJC Scopus subject areas

General Chemistry
General Materials Science

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10.1007/s00339-003-2244-z

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title = "Raman scattering study of La-, Nd- And Sm-substituted Bi4Ti 3O12",

abstract = "Raman modes of bismuth-layered perovskite Bi4-xLa xTi3O12 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 Bi 3.25Nd0.75Ti3O12 and Bi 3.25Sm0.75Ti3O12 are presented and compared with Bi4-xLaxTi3O12.",

author = "D. Wu and Y. Deng and Mak, {Chee Leung} and Wong, {K. H.} and Li, {A. D.} and Zhang, {M. S.} and Ming, {N. B.}",

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T1 - Raman scattering study of La-, Nd- And Sm-substituted Bi4Ti 3O12

AU - Wu, D.

AU - Deng, Y.

AU - Mak, Chee Leung

AU - Wong, K. H.

AU - Li, A. D.

AU - Zhang, M. S.

AU - Ming, N. B.

PY - 2005/2/1

Y1 - 2005/2/1

N2 - Raman modes of bismuth-layered perovskite Bi4-xLa xTi3O12 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 Bi 3.25Nd0.75Ti3O12 and Bi 3.25Sm0.75Ti3O12 are presented and compared with Bi4-xLaxTi3O12.

AB - Raman modes of bismuth-layered perovskite Bi4-xLa xTi3O12 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 Bi 3.25Nd0.75Ti3O12 and Bi 3.25Sm0.75Ti3O12 are presented and compared with Bi4-xLaxTi3O12.

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U2 - 10.1007/s00339-003-2244-z

DO - 10.1007/s00339-003-2244-z

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EP - 610

JO - Applied Physics A: Materials Science and Processing

JF - Applied Physics A: Materials Science and Processing

IS - 3

ER -

Raman scattering study of La-, Nd- And Sm-substituted Bi₄Ti ₃O₁₂

Abstract

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