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

被引：2
|
作者：
Zhao, Xing-Yu [1 ,2 ]
Wang, Li-Na [1 ,2 ]
Yin, Hong-Mei [1 ,2 ]
Zhou, Heng-Wei [2 ]
Huang, Yi-Neng [1 ,2 ]
机构：
[1] Nanjing Univ, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
[2] Yili Normal Univ, Coll Phys Sci & Technol, Xinjiang Lab Phase Transit & Microstruct Condense, Yining 835000, Peoples R China
来源：
CHINESE PHYSICS B | 2019年 / 28卷 / 08期
基金：
中国国家自然科学基金;
关键词：
alpha relaxation; ionic conductivity; glass-forming liquid; dielectric spectroscopy; DIELECTRIC-SPECTROSCOPY; PROPYLENE-GLYCOL; VISCOSITY; DYNAMICS; TRANSITION; DIFFUSION;
D O I：
10.1088/1674-1056/28/8/086601
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A measurement scheme for detecting the alpha relaxation time (tau) 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 tau 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 tau of 1,2-propanediol in a larger temperature range is compared with existing data.
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页数：6
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