Enhanced Debye level in nano Zn1+xSb, FeSb2, and NiSb: Nuclear inelastic spectroscopy on121 Sb. Issue 5 (16th February 2014)

• Record Type: Journal Article
• Authors: Claudio, Tania; Bessas, Dimitrios; Birke, Christina S.; Kieslich, Gregor; Panthöfer, Martin; Sergueev, Ilya; Tremel, Wolfgang; Hermann, Raphael P.
• Is Part Of: Physica status solidi. Volume 251:Issue 5(2014:May)
• Page Start: 919
• Page End: 923
• Publication Date: 2014-02-16
• Subjects: Solid state physics -- Periodicals; Solids -- Periodicals; Atomic structure -- Periodicals; 530.41
• DOI: 10.1002/pssb.201350246
• Languages: English
• ISSNs: 0370-1972

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="pssb201350217-sec-0001" sec-type="section"> <p>The<sup>121</sup> Sb partial density of phonon states (DPS) in nanopowder antimonides were obtained with nuclear inelastic scattering on <alternatives><inline-graphic mimetype="image" xlink:href="ark:/27927/pgh5jt6md" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /><mml:math altimg="urn:x-wiley:15213951:media:pssb201350246:pssb201350246-math-0005" display="inline" overflow="scroll" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="normal">Zn</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>+</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:mi mathvariant="normal">Sb</mml:mi></mml:math></alternatives>, <alternatives><inline-graphic mimetype="image" xlink:href="ark:/27927/pgh5jt6pc" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /><mml:math altimg="urn:x-wiley:15213951:media:pssb201350246:pssb201350246-math-0006" display="inline" overflow="scroll" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="normal">FeSb</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math></alternatives>, and NiSb prepared by a wet chemistry route. The DPS is compared with the bulk counterpart. An increase of the Debye level indicative of a decrease of the isothermal speed of sound is systematically observed. This observation reveals that the decrease in speed of sound observed in nanostructured thermoelectric materials is not restricted to sintered nanocomposites.</p> </sec> </abstract>