کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1813567 | 1525246 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Specific heat in quasi-one-dimensional conductors K0.3MoO3 and (TMTTF)2AsF6
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Specific heat in quasi-one-dimensional conductors K0.3MoO3 and (TMTTF)2AsF6 Specific heat in quasi-one-dimensional conductors K0.3MoO3 and (TMTTF)2AsF6](/preview/png/1813567.png)
چکیده انگلیسی
We measured the specific heat cp(T) of single crystals of quasi-one-dimensional conductors K0.3MoO3 and (TMTTF)2AsF6 by differential thermal analysis (DTA) method. In K0.3MoO3, a clear discontinuous change Δcp0∼1.2 J/mol/K was detected at the charge density wave (CDW) transition temperature TCDW=180 K. On the other hand, in (TMTTF)2AsF6, cp(T) showed a weak anomaly at the charge order (CO) transition temperature TCO=100 K. The entropy lost at around TCO was ΔS ∼0.24 J/mol/K at most, that is much smaller than R ln 2∼5.8 J/mol/K, which is the expected magnitude in the case of order-disorder transition. The CO of (TMTTF)2AsF6 might be related to the displacive type ferroelectric.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 404, Issues 3–4, 1 March 2009, Pages 392–395
Journal: Physica B: Condensed Matter - Volume 404, Issues 3–4, 1 March 2009, Pages 392–395
نویسندگان
Mitsuharu Nagasawa, Tokiko Nagasawa, Koichi Ichimura, Kazushige Nomura,