Ultrasound studies of clathrate thermoelectrics

V. Keppens; B. C. Sales; D. Mandrus; B. C. Chakoumakos; C. Laermans

Ultrasound studies of clathrate thermoelectrics

V. Keppens, B. C. Sales, D. Mandrus, B. C. Chakoumakos, C. Laermans

Research output: Contribution to journal › Conference article › peer-review

Abstract

Resonant Ultrasound Spectroscopy and low-temperature ultrasonic attenuation measurements are reported for filled and unfilled skutterudites and for Ge-clathrates. These data reveal that an unusual elastic behavior complements the thermal properties of the filled skutterudites and indicate the presence of low-energy vibrational modes. The attenuation at low-temperatures in the single-crystalline Ge-clathrate is glasslike and can be described by the same phenomenological Tunneling Model that has been developed to describe the low-temperature properties of amorphous solids.

Original language	English
Pages (from-to)	Z1331-Z1338
Journal	Proceedings - IEEE International Symposium on Circuits and Systems
Volume	4
State	Published - 2001
Externally published	Yes
Event	IEEE International Symposium on Circuits and Systems (ISCAS 2001) - Sydney, NSW, Australia Duration: May 6 2001 → May 9 2001

Cite this

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title = "Ultrasound studies of clathrate thermoelectrics",

abstract = "Resonant Ultrasound Spectroscopy and low-temperature ultrasonic attenuation measurements are reported for filled and unfilled skutterudites and for Ge-clathrates. These data reveal that an unusual elastic behavior complements the thermal properties of the filled skutterudites and indicate the presence of low-energy vibrational modes. The attenuation at low-temperatures in the single-crystalline Ge-clathrate is glasslike and can be described by the same phenomenological Tunneling Model that has been developed to describe the low-temperature properties of amorphous solids.",

author = "V. Keppens and Sales, {B. C.} and D. Mandrus and Chakoumakos, {B. C.} and C. Laermans",

year = "2001",

language = "English",

volume = "4",

pages = "Z1331--Z1338",

journal = "Proceedings - IEEE International Symposium on Circuits and Systems",

issn = "0271-4310",

note = "IEEE International Symposium on Circuits and Systems (ISCAS 2001) ; Conference date: 06-05-2001 Through 09-05-2001",

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TY - JOUR

T1 - Ultrasound studies of clathrate thermoelectrics

AU - Keppens, V.

AU - Sales, B. C.

AU - Mandrus, D.

AU - Chakoumakos, B. C.

AU - Laermans, C.

PY - 2001

Y1 - 2001

N2 - Resonant Ultrasound Spectroscopy and low-temperature ultrasonic attenuation measurements are reported for filled and unfilled skutterudites and for Ge-clathrates. These data reveal that an unusual elastic behavior complements the thermal properties of the filled skutterudites and indicate the presence of low-energy vibrational modes. The attenuation at low-temperatures in the single-crystalline Ge-clathrate is glasslike and can be described by the same phenomenological Tunneling Model that has been developed to describe the low-temperature properties of amorphous solids.

AB - Resonant Ultrasound Spectroscopy and low-temperature ultrasonic attenuation measurements are reported for filled and unfilled skutterudites and for Ge-clathrates. These data reveal that an unusual elastic behavior complements the thermal properties of the filled skutterudites and indicate the presence of low-energy vibrational modes. The attenuation at low-temperatures in the single-crystalline Ge-clathrate is glasslike and can be described by the same phenomenological Tunneling Model that has been developed to describe the low-temperature properties of amorphous solids.

UR - http://www.scopus.com/inward/record.url?scp=0035006634&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0035006634

SN - 0271-4310

VL - 4

SP - Z1331-Z1338

JO - Proceedings - IEEE International Symposium on Circuits and Systems

JF - Proceedings - IEEE International Symposium on Circuits and Systems

T2 - IEEE International Symposium on Circuits and Systems (ISCAS 2001)

Y2 - 6 May 2001 through 9 May 2001

ER -

Ultrasound studies of clathrate thermoelectrics

Abstract

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