Differential scanning calorimetry at charge-density-wave transitions

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

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


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.

Original languageEnglish
Pages (from-to)307-316
Number of pages10
JournalSynthetic Metals
Issue number3
StatePublished - 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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