Mechanism of Rare Earth Incorporation and Crystal Growth of Rare Earth Containing Type-I Clathrates

[Image: see text] Type-I clathrates possess extremely low thermal conductivities, a property that makes them promising materials for thermoelectric applications. The incorporation of cerium into one such clathrate has recently been shown to lead to a drastic enhancement of the thermopower, another p...

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Autores principales: Prokofiev, Andrey, Svagera, Robert, Waas, Monika, Weil, Matthias, Bernardi, Johannes, Paschen, Silke
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2015
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4718404/
https://www.ncbi.nlm.nih.gov/pubmed/26823658
http://dx.doi.org/10.1021/acs.cgd.5b00461
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author Prokofiev, Andrey
Svagera, Robert
Waas, Monika
Weil, Matthias
Bernardi, Johannes
Paschen, Silke
author_facet Prokofiev, Andrey
Svagera, Robert
Waas, Monika
Weil, Matthias
Bernardi, Johannes
Paschen, Silke
author_sort Prokofiev, Andrey
collection PubMed
description [Image: see text] Type-I clathrates possess extremely low thermal conductivities, a property that makes them promising materials for thermoelectric applications. The incorporation of cerium into one such clathrate has recently been shown to lead to a drastic enhancement of the thermopower, another property determining the thermoelectric efficiency. Here we explore the mechanism of the incorporation of rare earth elements into type-I clathrates. Our investigation of the crystal growth and the composition of the phase Ba(8–x)RE(x)TM(y)Si(46–y) (RE = rare earth element; TM = Au, Pd, Pt) reveals that the RE content x is mainly governed by two factors, the free cage space and the electron balance.
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spelling pubmed-47184042016-01-26 Mechanism of Rare Earth Incorporation and Crystal Growth of Rare Earth Containing Type-I Clathrates Prokofiev, Andrey Svagera, Robert Waas, Monika Weil, Matthias Bernardi, Johannes Paschen, Silke Cryst Growth Des [Image: see text] Type-I clathrates possess extremely low thermal conductivities, a property that makes them promising materials for thermoelectric applications. The incorporation of cerium into one such clathrate has recently been shown to lead to a drastic enhancement of the thermopower, another property determining the thermoelectric efficiency. Here we explore the mechanism of the incorporation of rare earth elements into type-I clathrates. Our investigation of the crystal growth and the composition of the phase Ba(8–x)RE(x)TM(y)Si(46–y) (RE = rare earth element; TM = Au, Pd, Pt) reveals that the RE content x is mainly governed by two factors, the free cage space and the electron balance. American Chemical Society 2015-12-02 2016-01-06 /pmc/articles/PMC4718404/ /pubmed/26823658 http://dx.doi.org/10.1021/acs.cgd.5b00461 Text en Copyright © 2015 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
spellingShingle Prokofiev, Andrey
Svagera, Robert
Waas, Monika
Weil, Matthias
Bernardi, Johannes
Paschen, Silke
Mechanism of Rare Earth Incorporation and Crystal Growth of Rare Earth Containing Type-I Clathrates
title Mechanism of Rare Earth Incorporation and Crystal Growth of Rare Earth Containing Type-I Clathrates
title_full Mechanism of Rare Earth Incorporation and Crystal Growth of Rare Earth Containing Type-I Clathrates
title_fullStr Mechanism of Rare Earth Incorporation and Crystal Growth of Rare Earth Containing Type-I Clathrates
title_full_unstemmed Mechanism of Rare Earth Incorporation and Crystal Growth of Rare Earth Containing Type-I Clathrates
title_short Mechanism of Rare Earth Incorporation and Crystal Growth of Rare Earth Containing Type-I Clathrates
title_sort mechanism of rare earth incorporation and crystal growth of rare earth containing type-i clathrates
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4718404/
https://www.ncbi.nlm.nih.gov/pubmed/26823658
http://dx.doi.org/10.1021/acs.cgd.5b00461
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