流体静压力下快离子导体Rb4Cu16I7Cl13离子电导的研究

在流体静压力为0.5—11.6kbar,温度-80—80℃范围内,测量了Rb₄Cu₁₆I₇Cl₁₃多晶粉末“松散”样品和“致密”样品的离子电导。“松散”样品电导与压力的关系表明,在4.0—5.0kbar附近,电导存在极大值;“致密”样品电导随压力单调下降。在一定压力下,“致密”样品电导率随温度变化的趋势与常压结果相同,压力对Rb₄Cu₁₆I₇Cl_关键词：

STUDY OF IONIC CONDUCTANCE OF FAST IONIC CONDUCTOR Rb4Cu16I7Cl13 UNDER HYDROSTATIC PRESSURE

The ionic conductances of polycrystalline Rb₄Cu₁₆I₇Cl₁₃ for both porous and dense specimens have been measured between - 80-8°C under hydrostatic pressure from 0.5 to 11.6 kbar. A conductance maximum exists near 4-5 kbar on conductance versus pressure curve for porous specimens, while the conductance decreases with pressure for dense specimen. The temperature dependence of conductance under constant high pressure is the same as that under atmospheric pressure. The pressure does not obviously influence the a →β phase transition temperature. The activation volumes are 0.90 cm³/mol and 1.55 cm³/mol for α and β phase respectively.