Differential scanning calorimetry at charge-density-wave transitions

Yiqin Wang; M. Chung; T. N. O'Neal; J. W. Brill

doi:10.1016/0379-6779(92)90356-N

Differential scanning calorimetry at charge-density-wave transitions

Yiqin Wang, M. Chung, T. N. O'Neal, J. W. Brill

Physics And Astronomy

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

We examined the use of differential scanning calorimetry (DSC) to measure the specific heat anomalies at second-order charge-density-wave transitions in blue bronze (K_0.3MoO₃), NbSe₃ and TaS₃. Samples of different morphologies were investigated to examine possible effects of different thermal time constants; results were generally independent of morphology. For blue bronze, an anomaly Δc_p = 0.16R was found at its 180 K transition; for NbSe₃, Δc_p = 0.06R at 142 K, and for TaS₃, Δc_p < 0.03R at 220 K. Our results demonstrate the practicality of using DSC for the quantitative measurement of small specific heat anomalies ({greater-than or approximate}0.2%) in synthetic metals.

Original language	English
Pages (from-to)	307-316
Number of pages	10
Journal	Synthetic Metals
Volume	46
Issue number	3
DOIs	https://doi.org/10.1016/0379-6779(92)90356-N
State	Published - Mar 1992

Bibliographical note

Funding Information:
We greatlya ppreciateth e technicaal ssistanceo f Guy Lehman,h elpful commentsb y George Mozurkewicha nd help in sample preparationa nd characterizatiobny Gary Minton. This researchw as funded in part by the NationalS cienceF oundationG, rantNos. DMR-86-15463a ndDMR-89-15440, and by the Mabel Pew Myrin Trust.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/0379-6779(92)90356-N

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@article{3ec6c4aa55454b9a8430bf55534247e2,

title = "Differential scanning calorimetry at charge-density-wave transitions",

abstract = "We examined the use of differential scanning calorimetry (DSC) to measure the specific heat anomalies at second-order charge-density-wave transitions in blue bronze (K0.3MoO3), NbSe3 and TaS3. Samples of different morphologies were investigated to examine possible effects of different thermal time constants; results were generally independent of morphology. For blue bronze, an anomaly Δcp = 0.16R was found at its 180 K transition; for NbSe3, Δcp = 0.06R at 142 K, and for TaS3, Δcp < 0.03R at 220 K. Our results demonstrate the practicality of using DSC for the quantitative measurement of small specific heat anomalies ({greater-than or approximate}0.2%) in synthetic metals.",

author = "Yiqin Wang and M. Chung and O'Neal, {T. N.} and Brill, {J. W.}",

note = "Funding Information: We greatlya ppreciateth e technicaal ssistanceo f Guy Lehman,h elpful commentsb y George Mozurkewicha nd help in sample preparationa nd characterizatiobny Gary Minton. This researchw as funded in part by the NationalS cienceF oundationG, rantNos. DMR-86-15463a ndDMR-89-15440, and by the Mabel Pew Myrin Trust.",

year = "1992",

month = mar,

doi = "10.1016/0379-6779(92)90356-N",

language = "English",

volume = "46",

pages = "307--316",

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TY - JOUR

T1 - Differential scanning calorimetry at charge-density-wave transitions

AU - Wang, Yiqin

AU - Chung, M.

AU - O'Neal, T. N.

AU - Brill, J. W.

N1 - Funding Information: We greatlya ppreciateth e technicaal ssistanceo f Guy Lehman,h elpful commentsb y George Mozurkewicha nd help in sample preparationa nd characterizatiobny Gary Minton. This researchw as funded in part by the NationalS cienceF oundationG, rantNos. DMR-86-15463a ndDMR-89-15440, and by the Mabel Pew Myrin Trust.

PY - 1992/3

Y1 - 1992/3

N2 - We examined the use of differential scanning calorimetry (DSC) to measure the specific heat anomalies at second-order charge-density-wave transitions in blue bronze (K0.3MoO3), NbSe3 and TaS3. Samples of different morphologies were investigated to examine possible effects of different thermal time constants; results were generally independent of morphology. For blue bronze, an anomaly Δcp = 0.16R was found at its 180 K transition; for NbSe3, Δcp = 0.06R at 142 K, and for TaS3, Δcp < 0.03R at 220 K. Our results demonstrate the practicality of using DSC for the quantitative measurement of small specific heat anomalies ({greater-than or approximate}0.2%) in synthetic metals.

AB - We examined the use of differential scanning calorimetry (DSC) to measure the specific heat anomalies at second-order charge-density-wave transitions in blue bronze (K0.3MoO3), NbSe3 and TaS3. Samples of different morphologies were investigated to examine possible effects of different thermal time constants; results were generally independent of morphology. For blue bronze, an anomaly Δcp = 0.16R was found at its 180 K transition; for NbSe3, Δcp = 0.06R at 142 K, and for TaS3, Δcp < 0.03R at 220 K. Our results demonstrate the practicality of using DSC for the quantitative measurement of small specific heat anomalies ({greater-than or approximate}0.2%) in synthetic metals.

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UR - http://www.scopus.com/inward/citedby.url?scp=0026838374&partnerID=8YFLogxK

U2 - 10.1016/0379-6779(92)90356-N

DO - 10.1016/0379-6779(92)90356-N

M3 - Article

AN - SCOPUS:0026838374

SN - 0379-6779

VL - 46

SP - 307

EP - 316

JO - Synthetic Metals

JF - Synthetic Metals

IS - 3

ER -

Differential scanning calorimetry at charge-density-wave transitions

Abstract

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