期刊
IONICS
卷 21, 期 1, 页码 67-78出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-014-1147-7
关键词
Rietveld refinement; Equivalent circuit; Modulus; Ionic conduction; Tunnel structure
II-NaFeP2O7 was prepared by conventional ceramic fabrication technique. Rietveld refinement, impedance properties, conductivity dispersion, electric modulus, and their scaling were carried out as a function of frequency and temperature. Thus, X-ray diffraction analysis indicates that the sample exhibits a single-phase nature with a monoclinic structure. In addition, analysis of Nyquist plots as well as modulus analysis revealed the contribution of two electrically active regions corresponding to bulk mechanism and distribution of grain boundaries. The near values of activation energies, obtained from the impedance and modulus spectra, confirm that the transport happens through an ion hopping mechanism, dominated by the motion of the Na+ ions in the framework of the investigated material resulting from intersecting tunnels or voids where Na+ is located.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据