中国物理B ›› 2019, Vol. 28 ›› Issue (8): 86601-086601.doi: 10.1088/1674-1056/28/8/086601

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Measurement scheme to detect α relaxation time of glass-forming liquid

Xing-Yu Zhao(赵兴宇), Li-Na Wang(王丽娜), Hong-Mei Yin(尹红梅), Heng-Wei Zhou(周恒为), Yi-Neng Huang(黄以能)   

  1. 1 National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093, China;
    2 Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters, College of Physical Science and Technology, Yili Normal University, Yining 835000, China
  • 收稿日期:2019-04-25 修回日期:2019-05-18 出版日期:2019-08-05 发布日期:2019-08-05
  • 通讯作者: Yi-Neng Huang E-mail:ynhuang@nju.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11664042).

Measurement scheme to detect α relaxation time of glass-forming liquid

Xing-Yu Zhao(赵兴宇)1,2, Li-Na Wang(王丽娜)1,2, Hong-Mei Yin(尹红梅)1,2, Heng-Wei Zhou(周恒为)2, Yi-Neng Huang(黄以能)1,2   

  1. 1 National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093, China;
    2 Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters, College of Physical Science and Technology, Yili Normal University, Yining 835000, China
  • Received:2019-04-25 Revised:2019-05-18 Online:2019-08-05 Published:2019-08-05
  • Contact: Yi-Neng Huang E-mail:ynhuang@nju.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11664042).

摘要: A measurement scheme for detecting the α relaxation time (τ) of glass-forming liquid is proposed, which is based on the measured ionic conductivity of the liquid doped with probing ions by low- and middle-frequency dielectric spectroscopy and according to the Nernst-Einstein, Stokes-Einstein, and Maxwell equations. The obtained τ values of glycerol and propylene carbonate by the scheme are consistent with those obtained by traditional dielectric spectroscopy, which confirms its reliability and accuracy. Moreover, the τ of 1,2-propanediol in a larger temperature range is compared with existing data.

关键词: α relaxation, ionic conductivity, glass-forming liquid, dielectric spectroscopy

Abstract: A measurement scheme for detecting the α relaxation time (τ) of glass-forming liquid is proposed, which is based on the measured ionic conductivity of the liquid doped with probing ions by low- and middle-frequency dielectric spectroscopy and according to the Nernst-Einstein, Stokes-Einstein, and Maxwell equations. The obtained τ values of glycerol and propylene carbonate by the scheme are consistent with those obtained by traditional dielectric spectroscopy, which confirms its reliability and accuracy. Moreover, the τ of 1,2-propanediol in a larger temperature range is compared with existing data.

Key words: α relaxation, ionic conductivity, glass-forming liquid, dielectric spectroscopy

中图分类号:  (Diffusion and ionic conduction in liquids)

  • 66.10.-x
77.22.Gm (Dielectric loss and relaxation) 64.70.P- (Glass transitions of specific systems) 82.56.Na (Relaxation)