Polymorph stability and phase transitions of trigonal Al1-xGaxPO4 mixed crystals

被引：10

作者：

Barz, RU ^{[1
]}

David, F ^{[1
]}

Schneider, J ^{[1
]}

Gille, P ^{[1
]}

机构：

[1] Univ Munich, Inst Kristallog & Angew Mineral, D-80333 Munich, Germany

来源：

ZEITSCHRIFT FUR KRISTALLOGRAPHIE | 2001年 / 216卷 / 09期

关键词：

D O I：

10.1524/zkri.216.9.501.20349

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Single crystals of Al1-xGaxPO4 of various mole fractions x were grown from phosphoric acid solutions under hydrothermal conditions using the slow-heating method. In order to relate the parameters of this low-quartz structure analogue and the observed phase transitions to the respective mole fraction, the crystals were investigated by means of electron probe microanalysis. X-ray powder diffraction and differential thermal analysis. The results are discussed in terms of the segregation effects occuring during growth. The limiting geometrical parameters for the existence of the high-quartz phase are compared to the values given in the literature.

引用

页码：501 / 508

页数：8

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