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.

Funding

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.

Funders
US NationalS cienceF oundationG

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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Cite this

@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.",

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

language = "English",

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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 - https://www.scopus.com/pages/publications/0026838374#tab=citedBy

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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