X-RAY-DIFFRACTION STUDY ON THE LOCAL-STRUCTURE OF MOLTEN ERCL3

被引：22

作者：

IWADATE, Y

IIDA, T

FUKUSHIMA, K

MOCHINAGA, J

GAUNEESCARD, M

机构：

[1] Department of Materials Science, Faculty of Engineering, Chiba University, Inage-ku Chiba 263

[2] Institut Universitaire des Systèmes Thermiques Industriels UA 1168, Université de Provence, 13397 Marseille Cedex 20, Centre St. Jérôme

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES | 1994年 / 49卷 / 7-8期

关键词：

D O I：

10.1515/zna-1994-7-814

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The short range structure of molten ErCl3 at 1053 K was investigated by X-ray diffraction. The nearest neighbour distance of Er3+-Cl- and the coordination number of Cl- around Er3+ were estimated to be 2.63 angstrom and 5.8 angstrom, respectively, and the Er3+-Er3+ and Cl--Cl- distances 4.05 angstrom and 3.75 angstrom, respectively. The ratio of the anion-anion pair distance to the cation-anion pair distance (r--/r+-) was, therefore, 1.43, being close to 1.41, characteristic of octahedral geometry. These results indicate that ErCl63- octahedra exist in molten ErCl3. Probably Er2Cl104- and a small amount of Er2Cl115- ions are formed according to the geometrical calculations of bond lengths and bond angles.

引用

页码：811 / 814

页数：4

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