CRYSTAL-GROWTH, ROOM-TEMPERATURE CRYSTAL-STRUCTURE AND PHASE-TRANSITIONS OF KMNPO4

被引：21

作者：

LUJAN, M

KUBEL, F

SCHMID, H

机构：

[1] Département de Chimie Minérale, Analytique et Appliquée, Faculté des Sciences, Université de Genève 30, CH-1211 Genève 4, quai Ernest-Ansermet

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 1995年 / 50卷 / 08期

关键词：

MANGANESE POTASSIUM ORTHOPHOSPHATE; CRYSTAL STRUCTURE; CRYSTAL GROWTH; PHASE TRANSITIONS;

D O I：

10.1515/znb-1995-0815

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Single crystals of KMnPO4 grown in a KCl flux show ferroelastic domains, The structure was determined on an optically controlled single domain crystal by X-ray diffraction methods. The cell is triclinic with dimensions a = 5.4813(5), b = 8.627(1), c = 8.887(1), in Angstrom, alpha = 87.73(1)degrees, beta = 89.10(1)degrees, gamma = 88.01(1)degrees, V-M = 419.6(1) Angstrom(3) and Z = 4. The structure is closely related to the stuffed beta-tridymite type. DTA experiments between room temperature and 1000 degrees C and polarized light microscopy observations showed four phase transitions: at 165, 330, 353 and 707 degrees C.

引用

页码：1210 / 1214

页数：5

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