材料科学
快离子导体
离子电导率
偶极子
离子键合
电介质
三角晶系
极化(电化学)
放松(心理学)
凝聚态物理
电导率
固体物理学
化学物理
结晶学
晶体结构
离子
物理化学
电解质
化学
光电子学
电极
社会心理学
心理学
物理
有机化学
作者
A. S. Nogai,A. A. Nogai,S. Yu. Stefanovich,Zh. M. Solikhodzha,D. E. Uskenbaev
标识
DOI:10.1134/s1063783420080259
摘要
The problems of the structural features, the dielectric and conducting properties of Na3Fe2(PO4)3 polycrystals prepared by hot pressing have been studied. The Na3Fe2(PO4)3 polycrystals in the α and β phases are shown to have higher conducting properties than the α and β phases of the single crystals grown by the solution–melt method. The regularities of the appearance of the dipole ordering, the ionic and superionic conductivities related to phase transitions and structural changes in the {[Fe2(PO4)3]3–}3∞ rhombohedral crystalline frame during polymorphic transformations are refined. The problems of the relaxation polarization in the α and β phases of Na3Fe2(PO4)3 are discussed. A model for explaining the dipole ordering and the ionic conductivity in Na3Fe2(PO4)3 is proposed.
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