Raman-active modes in the (CaxSr1-x)n+1TinO3n+1 layer perovskites

P. R. Graves; S. Myhra; K. Hawkins; T. J. White

doi:10.1016/0921-4534(91)90110-K

Raman-active modes in the (Ca_xSr_1-x)_n+1Ti_nO_3n+1 layer perovskites

P. R. Graves^*, S. Myhra, K. Hawkins, T. J. White

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Raman investigations of the n = ∞, 3 layer perovskites over the full range of Ca[harr ]Sr substitution show that trends in the evolution of active modes are in accord with the known structural transitions. The spectra exhibit broad, second-order features and sharp first order peaks. Degenerate E_g modes were observed to split into B_2g and B_3g components at the tetragonal/orthorhombic phase transitions. It is expected that these results will be relevant to modelling of the Raman scattering in high temperature superconductors with perovskite-related structures.

Original language	English
Pages (from-to)	265-272
Number of pages	8
Journal	Physica C: Superconductivity and its Applications
Volume	181
Issue number	4-6
DOIs	https://doi.org/10.1016/0921-4534(91)90110-K
Publication status	Published - Oct 10 1991
Externally published	Yes

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0921-4534(91)90110-K

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abstract = "Raman investigations of the n = ∞, 3 layer perovskites over the full range of Ca[harr ]Sr substitution show that trends in the evolution of active modes are in accord with the known structural transitions. The spectra exhibit broad, second-order features and sharp first order peaks. Degenerate Eg modes were observed to split into B2g and B3g components at the tetragonal/orthorhombic phase transitions. It is expected that these results will be relevant to modelling of the Raman scattering in high temperature superconductors with perovskite-related structures.",

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AU - White, T. J.

PY - 1991/10/10

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N2 - Raman investigations of the n = ∞, 3 layer perovskites over the full range of Ca[harr ]Sr substitution show that trends in the evolution of active modes are in accord with the known structural transitions. The spectra exhibit broad, second-order features and sharp first order peaks. Degenerate Eg modes were observed to split into B2g and B3g components at the tetragonal/orthorhombic phase transitions. It is expected that these results will be relevant to modelling of the Raman scattering in high temperature superconductors with perovskite-related structures.

AB - Raman investigations of the n = ∞, 3 layer perovskites over the full range of Ca[harr ]Sr substitution show that trends in the evolution of active modes are in accord with the known structural transitions. The spectra exhibit broad, second-order features and sharp first order peaks. Degenerate Eg modes were observed to split into B2g and B3g components at the tetragonal/orthorhombic phase transitions. It is expected that these results will be relevant to modelling of the Raman scattering in high temperature superconductors with perovskite-related structures.

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Raman-active modes in the (Ca_xSr_1-x)_n+1Ti_nO_3n+1 layer perovskites

Abstract

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