Vibrational properties of CdGa 2 S 4 at high pressure
Închide
Conţinutul numărului revistei
Articolul precedent
Articolul urmator
248 0
SM ISO690:2012
GALLEGO-PARRA, Samuel; GOMIS, Oscar; VILAPLANA, Rosario Isabel; ORTIZ, Henry M; PEREZ-GONZALEZ, Eduardo; LUNA, Ramon; RODRIGUEZ-HERNANDEZ, Placida Rogelio; MUNOZ, Alfonso Gonzalez; URSAKI, Veacheslav; TIGINYANU, Ion; MANJON, Francisco Javier. Vibrational properties of CdGa 2 S 4 at high pressure. In: Journal of Applied Physics. 2019, nr. 11(125), p. 0. ISSN 0021-8979.
10.1063/1.5080503
EXPORT metadate:
Google Scholar
Crossref
CERIF
BibTeX
DataCite
Dublin Core
Journal of Applied Physics
Numărul 11(125) / 2019 / ISSN 0021-8979

Vibrational properties of CdGa 2 S 4 at high pressure


DOI: 10.1063/1.5080503
Pag. 0-0

Gallego-Parra Samuel1, Gomis Oscar1, Vilaplana Rosario Isabel1, Ortiz Henry M123, Perez-Gonzalez Eduardo4, Luna Ramon1, Rodriguez-Hernandez Placida Rogelio4, Munoz Alfonso Gonzalez4, Ursaki Veacheslav5, Tiginyanu Ion6, Manjon Francisco Javier1
 
1 Universitat Politècnica de València,
2 CINVESTAV-Departamento de Nanociencia y Nanotecnología, Unidad Querétaro,
3 Universidad Distrital Fco. José de Caldas, Bogotá,
4 Universidad de La Laguna, La Laguna,
5 Ghitu Institute of Electronic Engineering and Nanotechnology,
6 Technical University of Moldova
 
Disponibil în IBN: 5 aprilie 2019


Rezumat

Raman scattering measurements have been performed in cadmium digallium sulphide (CdGa 2 S 4 ) with defect chalcopyrite structure up to 25 GPa in order to study its pressure-induced phase transitions. These measurements have been complemented and compared with lattice-dynamics ab initio calculations including the TO-LO splitting at high pressures in order to provide a better assignment of experimental Raman modes. In addition, experimental and theoretical Grüneisen parameters have been reported in order to calculate the molar heat capacity and thermal expansion coefficient of CdGa 2 S 4 . Our measurements provide evidence that CdGa 2 S 4 undergoes an irreversible phase transition above 15 GPa to a Raman-inactive phase, likely with a disordered rock salt structure. Moreover, the Raman spectrum observed on downstroke from 25 GPa to 2 GPa has been attributed to a new phase, tentatively identified as a disordered zinc blende structure, that undergoes a reversible phase transition to the Raman-inactive phase above 10 GPa.

Cuvinte-cheie
Cadmium compounds, Calculations, Copper compounds, Crystal lattices, Gallium compounds, Raman scattering, specific heat, Thermal expansion, Zinc sulfide

DataCite XML Export

<?xml version='1.0' encoding='utf-8'?>
<resource xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns='http://datacite.org/schema/kernel-3' xsi:schemaLocation='http://datacite.org/schema/kernel-3 http://schema.datacite.org/meta/kernel-3/metadata.xsd'>
<identifier identifierType='DOI'>10.1063/1.5080503</identifier>
<creators>
<creator>
<creatorName>Gallego-Parra, S.</creatorName>
<affiliation>Universitatea Politehnică Valencia, Spania</affiliation>
</creator>
<creator>
<creatorName>Gomis, O.</creatorName>
<affiliation>Universitatea Politehnică Valencia, Spania</affiliation>
</creator>
<creator>
<creatorName>Vilaplana, R.</creatorName>
<affiliation>Universitatea Politehnică Valencia, Spania</affiliation>
</creator>
<creator>
<creatorName>Ortiz, H.</creatorName>
<affiliation>Universitatea Politehnică Valencia, Spania</affiliation>
</creator>
<creator>
<creatorName>Perez-Gonzalez, E.</creatorName>
<affiliation>Universidad de La Laguna, La Laguna, Spania</affiliation>
</creator>
<creator>
<creatorName>Luna, R.</creatorName>
<affiliation>Universitatea Politehnică Valencia, Spania</affiliation>
</creator>
<creator>
<creatorName>Rodriguez-Hernandez, P.</creatorName>
<affiliation>Universidad de La Laguna, La Laguna, Spania</affiliation>
</creator>
<creator>
<creatorName>Munoz, A.</creatorName>
<affiliation>Universidad de La Laguna, La Laguna, Spania</affiliation>
</creator>
<creator>
<creatorName>Ursachi, V.V.</creatorName>
<affiliation>Institutul de Inginerie Electronică şi Nanotehnologii "D. Ghiţu", Moldova, Republica</affiliation>
</creator>
<creator>
<creatorName>Tighineanu, I.M.</creatorName>
<affiliation>Universitatea Tehnică a Moldovei, Moldova, Republica</affiliation>
</creator>
<creator>
<creatorName>Manjon, F.</creatorName>
<affiliation>Universitatea Politehnică Valencia, Spania</affiliation>
</creator>
</creators>
<titles>
<title xml:lang='en'><p>Vibrational properties of CdGa <sub>2</sub> S <sub>4</sub> at high pressure</p></title>
</titles>
<publisher>Instrumentul Bibliometric National</publisher>
<publicationYear>2019</publicationYear>
<relatedIdentifier relatedIdentifierType='ISSN' relationType='IsPartOf'>0021-8979</relatedIdentifier>
<subjects>
<subject>Cadmium compounds</subject>
<subject>Calculations</subject>
<subject>Copper compounds</subject>
<subject>Crystal lattices</subject>
<subject>Gallium compounds</subject>
<subject>Raman scattering</subject>
<subject>specific heat</subject>
<subject>Thermal expansion</subject>
<subject>Zinc sulfide</subject>
</subjects>
<dates>
<date dateType='Issued'>2019-03-21</date>
</dates>
<resourceType resourceTypeGeneral='Text'>Journal article</resourceType>
<descriptions>
<description xml:lang='en' descriptionType='Abstract'><p>Raman scattering measurements have been performed in cadmium digallium sulphide (CdGa <sub>2</sub> S <sub>4</sub> ) with defect chalcopyrite structure up to 25 GPa in order to study its pressure-induced phase transitions. These measurements have been complemented and compared with lattice-dynamics ab initio calculations including the TO-LO splitting at high pressures in order to provide a better assignment of experimental Raman modes. In addition, experimental and theoretical Gr&uuml;neisen parameters have been reported in order to calculate the molar heat capacity and thermal expansion coefficient of CdGa <sub>2</sub> S <sub>4</sub> . Our measurements provide evidence that CdGa <sub>2</sub> S <sub>4</sub> undergoes an irreversible phase transition above 15 GPa to a Raman-inactive phase, likely with a disordered rock salt structure. Moreover, the Raman spectrum observed on downstroke from 25 GPa to 2 GPa has been attributed to a new phase, tentatively identified as a disordered zinc blende structure, that undergoes a reversible phase transition to the Raman-inactive phase above 10 GPa.</p></description>
</descriptions>
<formats>
<format>uri</format>
</formats>
</resource>