Infrared spectroscopy of yttrium aluminum, yttrium gallium, and yttrium iron garnets

A. M. Hofmeister; K. R. Campbell

doi:10.1063/1.351846

Infrared spectroscopy of yttrium aluminum, yttrium gallium, and yttrium iron garnets

A. M. Hofmeister, K. R. Campbell

Department of Earth & Planetary Sciences

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

154 Scopus citations

Abstract

All 17 infrared lattice modes for yttrium aluminum, yttrium gallium, and yttrium iron garnets Y₃R₂(RO₄)₃ are obtained from single-crystal reflection and absorption spectroscopy, and the powder technique. Assignments for 12 modes are firmly establish based on chemical substitution among these garnets and within related series. Frequencies of the modes associated with translation of yttrium are nearly constant across the series. Frequencies of all other modes decrease quasilinearly as cell volume increases. Values the high and low frequency dielectric constants are in good agreement with independent measurements; also, the Lyddane-Sachs-Teller relationship was found to hold. Calculations of bulk moduli from vibrational spectra using a modification of Brout's formula linearly correlate with experimental values for K_T.

Original language	English
Pages (from-to)	638-646
Number of pages	9
Journal	Journal of Applied Physics
Volume	72
Issue number	2
DOIs	https://doi.org/10.1063/1.351846
State	Published - 1992

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title = "Infrared spectroscopy of yttrium aluminum, yttrium gallium, and yttrium iron garnets",

abstract = "All 17 infrared lattice modes for yttrium aluminum, yttrium gallium, and yttrium iron garnets Y3R2(RO4)3 are obtained from single-crystal reflection and absorption spectroscopy, and the powder technique. Assignments for 12 modes are firmly establish based on chemical substitution among these garnets and within related series. Frequencies of the modes associated with translation of yttrium are nearly constant across the series. Frequencies of all other modes decrease quasilinearly as cell volume increases. Values the high and low frequency dielectric constants are in good agreement with independent measurements; also, the Lyddane-Sachs-Teller relationship was found to hold. Calculations of bulk moduli from vibrational spectra using a modification of Brout's formula linearly correlate with experimental values for KT.",

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journal = "Journal of Applied Physics",

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AU - Hofmeister, A. M.

AU - Campbell, K. R.

PY - 1992

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N2 - All 17 infrared lattice modes for yttrium aluminum, yttrium gallium, and yttrium iron garnets Y3R2(RO4)3 are obtained from single-crystal reflection and absorption spectroscopy, and the powder technique. Assignments for 12 modes are firmly establish based on chemical substitution among these garnets and within related series. Frequencies of the modes associated with translation of yttrium are nearly constant across the series. Frequencies of all other modes decrease quasilinearly as cell volume increases. Values the high and low frequency dielectric constants are in good agreement with independent measurements; also, the Lyddane-Sachs-Teller relationship was found to hold. Calculations of bulk moduli from vibrational spectra using a modification of Brout's formula linearly correlate with experimental values for KT.

AB - All 17 infrared lattice modes for yttrium aluminum, yttrium gallium, and yttrium iron garnets Y3R2(RO4)3 are obtained from single-crystal reflection and absorption spectroscopy, and the powder technique. Assignments for 12 modes are firmly establish based on chemical substitution among these garnets and within related series. Frequencies of the modes associated with translation of yttrium are nearly constant across the series. Frequencies of all other modes decrease quasilinearly as cell volume increases. Values the high and low frequency dielectric constants are in good agreement with independent measurements; also, the Lyddane-Sachs-Teller relationship was found to hold. Calculations of bulk moduli from vibrational spectra using a modification of Brout's formula linearly correlate with experimental values for KT.

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JO - Journal of Applied Physics

JF - Journal of Applied Physics

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ER -

Infrared spectroscopy of yttrium aluminum, yttrium gallium, and yttrium iron garnets

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