Reconstructive phase transitions and physical properties of mixed LiK_0.9Na_0.1SO₄ crystals

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• 作者：Ae Ran Lim^a ; ^{aeranlim@hanmail.net} ; ^{arlim@jj.ac.kr} ; Sun Ha Kim^b
• 关键词：LiKSO4 ; LiK0.9Na0.1SO4 ; Mixed crystals ; Spin&ndash ; lattice relaxation time ; Phase transition temperature
• 刊名：Solid State Ionics
• 出版年：2012
• 期刊代码：96_01672738
• 类别：ch
• 出版时间：25 April, 2012
• 卷：214
• 期：Complete
• 页码：19-24
• 文件大小：676 K

摘要

LiK_0.9Na_0.1SO₄ mixed crystals were grown using the slow evaporation method, and their properties were compared with those of pure LiKSO₄ crystals. The physical properties and phase transition temperatures of the LiK_0.9Na_0.1SO₄ mixed crystals were obtained by performing ⁷Li, ³⁹K, and ²³Na nuclear magnetic resonance relaxation and differential scanning calorimetry. Based on the changes in the splitting of the NMR lines and the dependence of the relaxation time on temperature, the molecular motions for each ion in pure LiKSO₄ and mixed LiK_0.9Na_0.1SO₄ crystals were different by partial replacing of K ions with Na ions. And, the partial substitution of Na for K changes the phase behavior, and disappears the ferroelastic properties.