Phase transitions in K₃AlF₆

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• 作者：Artem M. Abakumov ; Marta D. Rossell ; Anastasiya M. Alekseeva ; Sergey Yu. Vassiliev ; Svetlana N. Mudrezova ; Gustaaf Van Tendeloo and Evgeny V. Antipov
• 关键词：K₃AlF₆ ; Elpasolite ; Phase transition ; Electron diffraction
• 刊名：Journal of Solid State Chemistry
• 出版年：2006
• 出版时间：February 2006
• 年：2006
• 卷：179
• 期：2
• 页码：421-428
• 全文大小：570 K

文摘

Phase transitions in the elpasolite-type K₃AlF₆ complex fluoride were investigated using differential scanning calorimetry, electron diffraction and X-ray powder diffraction. Three phase transitions were identified with critical temperatures , and . The α-K₃AlF₆ phase is stable below T₁ and crystallizes in a monoclinic unit cell with a