Structural properties of a GaNxP1-x alloy: Raman studies

I. A. Buyanova; W. M. Chen; E. M. Goldys; H. P. Xin; C. W. Tu

doi:10.1063/1.1380244

Structural properties of a GaNxP1-x alloy: Raman studies

I. A. Buyanova^*, W. M. Chen, E. M. Goldys, H. P. Xin, C. W. Tu

^*Corresponding author for this work

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

25 Citations (Scopus)

Abstract

Raman measurements in backscattering configuration are employed to characterize the effect of nitrogen on the structural properties of a GaN_xP_1-x alloy with x ≤ 3%. The following effects of N incorporation on the vibrational spectra of GaNP are observed. First, frequencies of GaP-like and GaN-like longitudinal optical phonons exhibit strong compositional dependence, due to a combined effect of alloying and biaxial strain. Second, a dramatic quenching of two-phonon Raman scattering and an emergence of zone-edge GaP-like vibrations are observed. These effects are tentatively attributed to a local distortion of the GaNP lattice and/or compositional disorder in the alloy.

Original language	English
Pages (from-to)	3959-3961
Number of pages	3
Journal	Applied Physics Letters
Volume	78
Issue number	25
DOIs	https://doi.org/10.1063/1.1380244
Publication status	Published - 18 Jun 2001

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abstract = "Raman measurements in backscattering configuration are employed to characterize the effect of nitrogen on the structural properties of a GaNxP1-x alloy with x ≤ 3%. The following effects of N incorporation on the vibrational spectra of GaNP are observed. First, frequencies of GaP-like and GaN-like longitudinal optical phonons exhibit strong compositional dependence, due to a combined effect of alloying and biaxial strain. Second, a dramatic quenching of two-phonon Raman scattering and an emergence of zone-edge GaP-like vibrations are observed. These effects are tentatively attributed to a local distortion of the GaNP lattice and/or compositional disorder in the alloy.",

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AU - Buyanova, I. A.

AU - Chen, W. M.

AU - Goldys, E. M.

AU - Xin, H. P.

AU - Tu, C. W.

PY - 2001/6/18

Y1 - 2001/6/18

N2 - Raman measurements in backscattering configuration are employed to characterize the effect of nitrogen on the structural properties of a GaNxP1-x alloy with x ≤ 3%. The following effects of N incorporation on the vibrational spectra of GaNP are observed. First, frequencies of GaP-like and GaN-like longitudinal optical phonons exhibit strong compositional dependence, due to a combined effect of alloying and biaxial strain. Second, a dramatic quenching of two-phonon Raman scattering and an emergence of zone-edge GaP-like vibrations are observed. These effects are tentatively attributed to a local distortion of the GaNP lattice and/or compositional disorder in the alloy.

AB - Raman measurements in backscattering configuration are employed to characterize the effect of nitrogen on the structural properties of a GaNxP1-x alloy with x ≤ 3%. The following effects of N incorporation on the vibrational spectra of GaNP are observed. First, frequencies of GaP-like and GaN-like longitudinal optical phonons exhibit strong compositional dependence, due to a combined effect of alloying and biaxial strain. Second, a dramatic quenching of two-phonon Raman scattering and an emergence of zone-edge GaP-like vibrations are observed. These effects are tentatively attributed to a local distortion of the GaNP lattice and/or compositional disorder in the alloy.

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JF - Applied Physics Letters

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Structural properties of a GaNxP1-x alloy: Raman studies

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