Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

 
 
DownloadE-Mail
  Thermal conductivity and phonon anharmonicity of chemical vapor transport grown and mineral–FeS2 single crystals: An optothermal Raman study

Özden, A., Zuñiga-Puelles, E., Kortus, J., Gumeniuk, R., & Himcinschi, C. (2022). Thermal conductivity and phonon anharmonicity of chemical vapor transport grown and mineral–FeS2 single crystals: An optothermal Raman study. Journal of Raman Spectroscopy, 54(1), 84-92. doi:10.1002/jrs.6456.

Item is

Basisdaten

einblenden: ausblenden:
Genre: Zeitschriftenartikel

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Özden, Ayberk1, Autor
Zuñiga-Puelles, Esteban2, Autor           
Kortus, Jens1, Autor
Gumeniuk, Roman1, Autor
Himcinschi, Cameliu1, Autor
Affiliations:
1External Organizations, ou_persistent22              
2Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              

Inhalt

einblenden:
ausblenden:
Schlagwörter: anharmonicity, CVT, FeS2, optothermal, thermal conductivity
 Zusammenfassung: In this work, thermal conductivity and anharmonic properties of chemical vapor transport (CVT)-grown pyrite-FeS2 and mineral single crystals have been investigated and compared. It has been shown that optothermal Raman technique is able to capture the large thermal conductivity difference between the CVT and mineral samples at low temperatures. This difference is attributed to point defects such as sulfur vacancies or impurity doping of CVT-grown FeS2 crystals. Balkanski–Klemens model analysis of the samples has shown that three-phonon scattering of Ag and Eg modes and the lattice thermal expansion are the dominant anharmonic contributors while four-phonon scattering is negligible in pyrite-FeS2. Thus, thermal conductivity of materials that is difficult to measure by conventional methods (i.e., flash method) can be measured in their most native form by using optothermal Raman spectroscopy (RS) without rigorous sample preparation. © 2022 The Authors. Journal of Raman Spectroscopy published by John Wiley & Sons Ltd.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2022-09-302022-09-30
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1002/jrs.6456
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Journal of Raman Spectroscopy
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Chichester : John Wiley & Sons, Ltd.
Seiten: - Band / Heft: 54 (1) Artikelnummer: - Start- / Endseite: 84 - 92 Identifikator: ISSN: 0377-0486
CoNE: https://pure.mpg.de/cone/journals/resource/954925526813