arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2012.02411physics.ins-detcond-mat.mtrl-scicond-mat.str-elcond-mat.supr-con
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脉冲磁场中的高分辨量热法

High-resolution Calorimetry in Pulsed Magnetic Fields

Shusaku Imajo, Chao Dong, Akira Matsuo, Koichi Kindo, Yoshimitsu Kohama

摘要:

我们研制了一种用于测量脉冲磁场中热力学性质的新型量热计。一个仪器的设计描述连同建设的细节,包括一个RuO 2温度计的灵敏度。通过测量纯锗、CeCu_2Ge_2和$κ$ -(BEDT-TTF)_2Cu [N(CN)_2]Br三种样品在高达43.5T的脉冲磁场下的热容,证明了量热计的工作。研究发现,实现场稳定性是实现高分辨率脉冲场热容测量的关键。我们还测试了性能的量热计采用两种测量技术;准绝热和双斜率的方法。我们证明,在这项研究中开发的量热计能够在脉冲磁场中进行高分辨率量热,这为高场热力学研究开辟了新的机会。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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