The heat capacity and standard thermodynamic functions of Ni0.5Zr2(PO4)3 phosphate over the temperature range from T → 0 to 664 K

被引：9

作者：

Pet'kov, V. I. ^{[1
]}

Markin, A. V. ^{[1
]}

Shchelokov, I. A. ^{[1
]}

Sukhanov, M. V. ^{[1
]}

Smirnova, N. N. ^{[1
]}

机构：

[1] Nizhnii Novgorod State Univ, Nizhnii Novgorod 603950, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2007年 / 81卷 / 11期

基金：

俄罗斯基础研究基金会;

关键词：

Crystalline materials - Entropy - Fractal dimension - Phosphates - Polonium compounds - Specific heat - Zirconium compounds;

D O I：

10.1134/S0036024407110027

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 temperature dependence of the heat capacity of crystalline nickel zirconium phosphate C-p(circle) = f(T) was measured over the temperature range 6-664 K. The experimental data obtained were used to calculate the standard thermodynamic functions of Ni0.5Zr2(PO4)(3) from T -> 0 to 664 K. The standard entropy of phosphate formation from simple substances at 298.15 K was calculated from the absolute entropy of the compound. The data on the low-temperature heat capacity were used to determine the fractal dimension of Ni0.5Zr2(PO4)(3) over the temperature range 30-50 K. Conclusions concerning the heterodynamic characteristics of the structure of Ni0.5Zr2(PO4)(3) were drawn.

引用

页码：1728 / 1733

页数：6

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