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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Low-temperature properties of glassy and crystalline states of n-butanol
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Low-temperature properties of glassy and crystalline states of n-butanol

机译：正丁醇的玻璃态和结晶态的低温特性

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摘要

We present low-temperature measurements of the specific heat and the thermal conductivity for the three solid phases of n-butanol, namely glass, crystal and "glacial" phases. Whereas crystal and glass ones are found to exhibit the expected thermal behavior for crystalline and non-crystalline solids, respectively (i.e. Debye theory for crystals, and universal low-temperature properties with a boson peak and a concomitant plateau in the thermal conductivity for glasses), the so-called "glacial phase" behaves as a very defective crystal, confirming earlier work that identifies it as a mixed phase of nanocrystallites and a disordered matrix. We have also measured longitudinal and transverse sound velocities at low temperatures for the glass phase. The elastic Debye coefficient and Debye temperature of the glass determined from these measurements are found to agree very well with the calorimetric ones obtained from a SPM analysis of the specific heat.
机译：我们提供了正丁醇的三个固相，即玻璃，晶体和“冰”相的比热和导热率的低温测量值。而发现晶体和玻璃分别表现出预期的结晶和非结晶固体的热行为（即，对于晶体的德拜理论，以及具有玻色子峰和随之而来的玻璃热导率平台的普遍的低温性质） ，所谓的“冰期”表现为非常有缺陷的晶体，这证实了将其鉴定为纳米微晶和无序基质的混合相的早期工作。我们还测量了低温下玻璃相的纵向和横向声速。发现由这些测量确定的玻璃的弹性德拜系数和德拜温度与通过比热的SPM分析获得的量热法非常吻合。

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