Study of phase transition and volume thermal expansion in a rare-earth (RE) oxyfluoride system by high-temperature XRD (RE=La, Nd, Sm, Eu and Gd)

被引：19

作者：

Achary, SN ^{[1
]}

Ambekar, BR ^{[1
]}

Mathews, MD ^{[1
]}

Tyagi, AK ^{[1
]}

Moorthy, PN ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Div Appl Chem, Trombay 400085, Mumbai, India

来源：

THERMOCHIMICA ACTA | 1998年 / 320卷 / 1-2期

关键词：

rare-earth oxyfluoride; high-temperature XRD;

D O I：

10.1016/S0040-6031(98)00449-3

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Volume thermal expansion behaviour of a number of rare-earth oxyfluorides (REOF) have been studied using high-temperature X-Ray diffractometry (HT-XRD) in the 298-1075 K range in air. The studies revealed an anomalous expansion for each compound associated with phase transition. The phase transition temperature and the coefficient of volume thermal expansion of five compounds in REOF series determined by this method are reported and compared with our earlier results obtained by dilatometry. (C) 1998 Elsevier Science B.V.

引用

页码：239 / 243

页数：5

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