Development of micro-chip thermodynamic measurement with multiple external conditions

多外部条件下微芯片热力学测量的发展

• 批准号: 23654122
• 负责人: NAKAZAWA Yasuhiro
• 金额: $ 2.33万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23654122/
• 关键词: チップカロリーメーター; 微小単結晶; 分子性化合物; 磁場中熱測定; 圧力下熱測定; 熱容量; マイクロチップ; 環境制御; 有機超伝導体; 磁場

The construction of ac heat capacity measurement system using micro-fabrication thermal devices was performed with an aim to obtain thermodynamic information using extremely small single crystal samples of molecule-based compounds. We used commercially available chip devices of TCG3880 and XEN-39390 series which have much smaller sensing parts as compared with former one. We detected the glass transition related to the ethylene conformation in a charge transfer complex of kapp-(BEDT-TTF)2Cu[N(CN)2]Br, where BEDT-TTF is bisethylenedithiotetrathiafulvalene. The heat capacity measurements under strong magnetic fields especially with in-plane magnetic fields were attained. The utilization of the chip devices under gas pressure control was also tried in the project.

为了获得分子基化合物的极小单晶样品的热力学信息，使用微加工热器件构建了交流热容测量系统。我们使用了市售的TCG 3880和XEN-39390系列芯片器件，与前者相比，它们具有更小的传感部件。在Kapp-（BEDT-TTF）_2Cu [N（CN）_2]Br电荷转移配合物中，我们检测到了与乙烯构象有关的玻璃化转变。实现了在强磁场特别是面内磁场下的热容测量。在该项目中还尝试了在气压控制下使用芯片器件。

项目成果

有機三角格子化合物のスピン液体状態の熱的性質

有机三角晶格化合物自旋液态的热性质

• 发表时间: 2012
• 作者: A. Sekiyama;S. Kitayama;H. Fujiwara;A. Higashiya;T. Kiss;S. Suga;K. Tamasaku;M. Yabashi;T. Ishikawa and T. Ebihara;Shota Ono and Kaoru Ohno;M.M.Islam;中澤康浩
• 通讯作者: 中澤康浩

Thermodynamics of Dimer-Mott Spin Liquids

二聚体-莫特自旋液体的热力学

• 发表时间: 2012
• 作者: C. Uyeda;M. Ykoi;M. Katsura and K. Hisayoshi;Kaoru Ohno;A. Sekiyama;Y. Nakazawa
• 通讯作者: Y. Nakazawa

Development of Single Crystal Calorimetry at Low-Temperatures and under Pressures

低温加压单晶量热法的发展

• 发表时间: 2012
• 作者: Y. Horie;Y. Nakazawa;K. Takai;and T. Enoki;久保田 正人;山口貴司，池田真司，畠山千佳，渕本寛人，森健雄，藤原秀紀，木須孝幸，保井晃，斉藤祐児，海老原孝雄，関山明;Y. Nakazawa
• 通讯作者: Y. Nakazawa

Thermodynamic Properties of the Spin-Liquid State in Organic Charge Transfer Salts

有机电荷转移盐中自旋液态的热力学性质

• 发表时间: 2011
• 作者: J. Yamaura;K. Ohgushi;H. Ohsumi;T. Hasegawa;I. Yamauchi;K. Sugimoto;S. Takeshita;A. Tokuda;M. Takata;M. Udagawa;M. Takigawa;H. Harima;T. Arima;and Z. Hiroi;Y. Nakazawa
• 通讯作者: Y. Nakazawa

Thermodynamic investigation by heat capacity measurements of ferrimagnetic A2Mn[Mn(CN)6] (A=K, Rb, Cs) Prussian blue compounds

• DOI: 10.1088/0953-8984/26/1/016001
• 发表时间: 2014-01
• 期刊: Journal of Physics: Condensed Matter
• 作者: Y. Kawamoto;S. Yamashita;R. Yoshimoto;Y. Nakazawa;J. G. DaSilva;C. M. Kareis;Joel S A Miller