Proton conductivity and thermodynamic features in the hydrogen-bonded molecular systems

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	Proton conductivity and thermodynamic features in the hydrogen-bonded molecular systems
	Pang, XF ; Zhang, HW ; Znu, J
通讯作者	Pang, XF()
	2005-10-10
发表期刊	INTERNATIONAL JOURNAL OF MODERN PHYSICS B
ISSN	0217-9792
卷号	19 期号:25 页码:3835-3859
摘要	The proton conductivity and thermodynamic features, arising from motions of the ionic and bonded defects, in hydrogen-bonded molecular systems have been investigated by the quantum-mechanical method and the transfer integral way in our model, in which the collective effect and the mutual correlation between the protonic and heavy ionic sublattices are specially considered. We first derived the equations of motion and its soliton solutions from the model Hamiltonian. The results obtained show that this model can simultaneously support motions of the ionic and bonded defects which are due to competition of the double-well potential and non-linearly coupled interaction between the protons and heavy ions. Thus we find out the mobility of the kink-antikink pair and electrical-conductivity of the proton transfer in the hydrogen-bonded systems exposed in an externally applied electrical-field through the dynamic equation of the kink-antikink pair and its solution in this model. For ice, the mobility and electrical conductivity of the proton transfer obtained axe about (6.5 - 6.9) X 10(-6) m(2)/V - s and (7.6 - 8.1) x 10(-3) (Omega (.) m)(-1), respectively, which are in the domain of semiconductors and are basically consistent with experimental values for the crystal. Finally we calculate the free energy and specific heat of the systems with finite temperature by the model Hamiltonian and transfer integral way. The specific heat is also consistent with experimental data. This is a very interesting result.
关键词	hydrogen-bonded system proton conductivity quantum theory mobility specific heat
收录类别	SCI
语种	英语
WOS研究方向	Physics
WOS类目	Physics, Applied ; Physics, Condensed Matter ; Physics, Mathematical
WOS记录号	WOS:000233031600004
出版者	WORLD SCIENTIFIC PUBL CO PTE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/82326
通讯作者	Pang, XF
作者单位	1.Univ Elect Sci & Technol China, Inst Life Sci & Technol, Chengdu 610054, Peoples R China 2.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110015, Peoples R China
推荐引用方式 GB/T 7714	Pang, XF,Zhang, HW,Znu, J. Proton conductivity and thermodynamic features in the hydrogen-bonded molecular systems[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS B,2005,19(25):3835-3859.
APA	Pang, XF,Zhang, HW,&Znu, J.(2005).Proton conductivity and thermodynamic features in the hydrogen-bonded molecular systems.INTERNATIONAL JOURNAL OF MODERN PHYSICS B,19(25),3835-3859.
MLA	Pang, XF,et al."Proton conductivity and thermodynamic features in the hydrogen-bonded molecular systems".INTERNATIONAL JOURNAL OF MODERN PHYSICS B 19.25(2005):3835-3859.