Lattice dynamics of AgGaS<sub>2</sub>

Holah, G. D.; Webb, John S.; Montgomery, H. E.

doi:10.1088/0022-3719/7/21/010

Cited by 74 publications

(35 citation statements)

References 19 publications

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“…Unfortunately, no details of crystal growth are given in [51,52]. Obviously, the Brillouin scattering experiments [51] have been carried out on the same single crystal specimen used before to study the lattice vibrational properties of AgGaS 2 in the optical phonon mode range by Raman scattering and infrared reflectivity [57,58]. However, in the range of modes with lowest frequencies the results of these experiments deviate distinctly from those supposed to be the most reliable ones [28] and also from recent experimental data obtained on high quality AgGaS 2 single crystals prepared by iodine vapour transport [59].…”

Section: Cdgeasmentioning

confidence: 99%

Lattice dynamics and related properties of A^IB^III and A^IIB^IV compounds, I. Elastic constants

Neumann¹

2004

Cryst. Res. Technol.

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The present state of knowledge of the elastic properties of the ternary chalcopyrite compounds and some related materials is reviewed. Results of experimental elastic constant determinations are critically evaluated by comparing with other experimentally available material parameters that directly depend on the elastic constants. Possible reasons for existing discrepancies and obvious inconsistencies in the experimental data are discussed. The results of theoretical calculations of the elastic constants of these compounds based on different theoretical models and approaches are compared with experimental data and are assessed concerning achievable accuracy and reliability.

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Section: Cdgeasmentioning

confidence: 99%

Lattice dynamics and related properties of A^IB^III and A^IIB^IV compounds, I. Elastic constants

Neumann¹

2004

Cryst. Res. Technol.

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“…All Raman lines of the Zn-doped VPE layer can be assigned to those observed on the undoped layer and no appearance of new Raman line(s) is seen for the Zn-doped VPE layer. The strongest Raman line assigned to the A 1 mode phonon is purely due to vibration of S atoms in the c-plane [12,13]. According to the rigid-ion model calculation of Koshel and Bettini [14], the frequencies of highest E(LO) and B 2 (LO) mode Raman lines are strongly related to the reduced mass of the III-VI bond [12,15].…”

Section: Characterizationmentioning

confidence: 95%

Raman scattering of Zn doped CuGaS2 layers grown by vapor phase epitaxy

Terasako

Iida

Ichinokura

2005

Journal of Physics and Chemistry of Solids

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“…Both modes differ from the other modes by their pure cation motion in the zb approximation [3]. Due to the splitting of the cation masses, the zb symmetry around the anions is removed and thus they participate in the vibration.…”

Section: Wmentioning

confidence: 98%

“…Since the ch may be regarded as a superstructure of the zb materials [GI, in a first approximation the zb-phonon curves are merely folded back into the ch Brillouin zone [3]. This zb approximation yields a linking of the ch modes to the zb ones [7] and an explanation of the spectra.…”

Section: Introductionmentioning

confidence: 99%

Zone‐centered phonons in ternary compounds of chalcopyrite structure

Bettini

1975

Physica Status Solidi (b)

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A Keating model calculation of the zone-centered phonons in ternary compounds of the chalcopyrite (ch) structure is presented. The calculations are restricted to phonons of the phosphor(P) ch-family. The model describes reasonably well the phonons of high energy. The spectra are determined preponderantly by the masses of the cations and the force constants between nearest neighbours. The influence of the force constants between second nearest neighbours and the effective charges is small. The dependence of the individual phonons upon changes in the model parametersis unravelled. The variation of the ir-oscillator strength of the same mode in different compounds demonstrates the importance of changes in the eigenvectors. The force constants of the chalcopyrite (ch) bonds are compared to those of corresponding zincblende (zb) bonds and can be explained by changes in the bond length, The model calculations yield a symmetry assignment of the experimental spectra in CdSnP, and ZnSnP,.Die langwelligen optischen Phononen von Chalkopyritverbindungen (ch) werden mit dem Keating-Model1 berechnet. Die Berechnungen beschranken sich auf Gitterschwingungen in der Phosphor(P)-oh-Familie. Das Model1 beschreibt die hochenergetischen Phononen verniinftig. Die Spektren werden vorwiegend von den Kationenmassen und Kraftkonstanten zwischen nLchsten Nachbarn bestimmt. Der EinfluD der Kraftkonstanten zwischen ubernachsten Nachbarn und der effektiven Ladungen ist klein. Die Abhingigkeit der einzelnen Phononen von Veranderungen in den Modellparametern wird gekliirt. Die Variation der Infrarot-Oszillatorstarke derselben Mode in verschiedenen Verbindungen unterstreicht die Bedeutung der Veranderungen in den Eigenvektoren. Die Kraftkonstanten der Chalkopyritbindungen (ch) werden mit denen entsprechender Zinkblendebindungen (zb) verglichen und konnen uber Vergnderungen in der Bindungslange gedeutet werden. Die Berechnungen liefern eine Symmetriezuordnung fur die experimentellen Spektren in CdSnP, und ZnSnP,.

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Lattice dynamics of AgGaS₂

Cited by 74 publications

References 19 publications

Lattice dynamics and related properties of A^IB^III and A^IIB^IV compounds, I. Elastic constants

Lattice dynamics and related properties of A^IB^III and A^IIB^IV compounds, I. Elastic constants

Raman scattering of Zn doped CuGaS2 layers grown by vapor phase epitaxy

Zone‐centered phonons in ternary compounds of chalcopyrite structure

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Lattice dynamics of AgGaS2

Cited by 74 publications

References 19 publications

Lattice dynamics and related properties of AIBIII and AIIBIV compounds, I. Elastic constants

Lattice dynamics and related properties of AIBIII and AIIBIV compounds, I. Elastic constants

Raman scattering of Zn doped CuGaS2 layers grown by vapor phase epitaxy

Zone‐centered phonons in ternary compounds of chalcopyrite structure

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Lattice dynamics of AgGaS₂

Lattice dynamics and related properties of A^IB^III and A^IIB^IV compounds, I. Elastic constants

Lattice dynamics and related properties of A^IB^III and A^IIB^IV compounds, I. Elastic constants