论文标题
脉冲磁场中的高分辨率量热法
High-resolution Calorimetry in Pulsed Magnetic Fields
论文作者
论文摘要
我们已经开发了一种用于测量脉冲磁场中热力学特性的新量热仪。描述了仪器设计以及构造细节，包括RUO2温度计的灵敏度。通过测量三个样品的热容量，纯晶也，cecu2ge2和$κ$ - （bedt-ttf）2cu [n（cn）2] br，在高达43.5 t的脉冲场中证明了量热仪的运行。我们已经发现，现场稳定性的实现是衡量高质量热容量的关键。我们还通过采用两种测量技术来测试量热仪的性能。准绝热和双斜率方法。我们证明，这项研究中开发的量热仪能够在脉冲磁场中执行高分辨率量热法，从而为高场热力学研究打开了新的机会。
We have developed a new calorimeter for measuring thermodynamic properties in pulsed magnetic fields. An instrumental design is described along with the construction details including the sensitivity of a RuO2 thermometer. The operation of the calorimeter is demonstrated by measuring heat capacity of three samples, pure Germanium, CeCu2Ge2, and $κ$-(BEDT-TTF)2Cu[N(CN)2]Br, in pulsed fields up to 43.5 T. We have found that realization of field-stability is a key for measuring high-resolution heat capacity under pulsed fields. We have also tested the performance of the calorimeter by employing two measurement techniques; the quasi-adiabatic and dual-slope methods. We demonstrate that the calorimeter developed in this study is capable of performing high-resolution calorimetry in pulsed magnetic fields, which opens new opportunities for high-field thermodynamic studies.
