| Issue |
Europhys. Lett.
Volume 48, Number 6, December 1999
|
|
|---|---|---|
| Page(s) | 667 - 671 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i1999-00536-9 | |
| Published online | 01 September 2002 | |
The Curie-Weiss behavior of heat capacity and dielectric constant in the
incommensurate phase of 
1
Research Center for Dielectric and Advanced Matter Physics, Pusan National University - Pusan, 609-735, Korea
2
Department of Physics, Pusan National University - Pusan, 609-735, Korea
3
Department of Physics, Pohang University of Science and Technology, Pohang, 709-784, Korea
Received:
3
March
1999
Accepted:
20
October
1999
The Curie-Weiss behavior of heat capacity and dielectric constant was
observed in the incommensurate phase of , as temperature
is lowered toward the incommensurate-commensurate phase transition.
The exponents obtained from the dielectric and heat capacity
measurements were 
and 
, respectively. The present results support the view on the
evolution of the incommensurate phase that the incommensurate phase
consists of regularly placed discommensurations, and the distance between
discommensurations increases and eventually a transition to the
commensurate phase occurs as temperature is lowered.
PACS: 64.70.Rh – Commensurate-incommensurate transitions / 65.40.+g – Heat capacities of solids
© EDP Sciences, 1999
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