Heat capacity of GdBiGeO5 in the temperature range 373-1000 K

被引：5

作者：

Denisova, L. T. ^{[1
]}

Izotov, A. D. ^{[2
]}

Kargin, Yu F. ^{[3
]}

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

Galiakhmetova, N. A. ^{[1
]}

机构：

[1] Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia

[2] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Moscow 119991, Russia

[3] Russian Acad Sci, Baikov Inst Met & Mat Sci, Moscow 119991, Russia

来源：

DOKLADY PHYSICAL CHEMISTRY | 2017年 / 473卷

关键词：

Bismuth compounds - Differential scanning calorimetry - Germanium compounds - Iron compounds - Specific heat - Temperature distribution;

D O I：

10.1134/S0012501617040029

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：

Ternary oxide GdBiGeO5 was synthesized by a ceramic method. The heat capacity of crystalline gadolinium bismuth germanate as a function of temperature in the range 373-1000 K has been studied by differential scanning calorimetry. It has been demonstrated that the temperature dependence of the heat capacity can be described by the classical Maier-Kelley equation. From the experimental C (P) = f(T) data, the thermodynamic functions (the change in enthalpy and entropy) of ternary oxide GdBiGeO5 have been calculated.

引用

页码：58 / 60

页数：3

共 15 条

[1] CRYSTAL STRUCTURE OF BI2GEO5 [J].

AURIVILLIUS, B ;

LINDBLOM, CI ;

STENSON, P .

ACTA CHEMICA SCANDINAVICA, 1964, 18 (06) :1555-&

[2]

Burkov V. I., 2004, KRISTALLY BI12MXO20

[3] Spectroscopic characterization and systematic crystal-field modeling of optically active rare earth R3+ ions in the bismuth germanate BiY1-xRxGeO5 host [J].

Cascales, C. ;

Zaldo, C. .

CHEMISTRY OF MATERIALS, 2006, 18 (16) :3742-3753

[4] Crystal-field analysis of Eu3+ energy levels in the new rare-earth R BiY1-xRxGeO5 oxide [J].

Cascales, C ;

Zaldo, C .

JOURNAL OF SOLID STATE CHEMISTRY, 2003, 171 (1-2) :262-267

[5] New rare-earth (Y, Yb) bismuth(III) germanates. An initial study of a promising series [J].

Cascales, C ;

Campa, JA ;

Puebla, EG ;

Monge, MA ;

Valero, CR ;

Rasines, I .

JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (12) :3626-3630

[6] Thermal physical properties of Bi4Ge3O12 single crystals [J].

Denisov, V. M. ;

Denisova, L. T. ;

Irtyugo, L. A. ;

Biront, V. S. .

PHYSICS OF THE SOLID STATE, 2010, 52 (07) :1362-1365

[7]

Denisova L.T., 2015, ZH NEORG KHIM, V60, P173

[8] Preparation and luminescence properties of Yb3+ activated Gd2GeO5 [J].

Ding, Lihua ;

Zhang, Qingli ;

Liu, Wenpeng ;

Yin, Shaotang .

JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 557 :261-264

[9]

IZOTOV AD, 1994, INORG MATER+, V30, P424

[10]

Leitner J, 2003, THERMOCHIM ACTA, V395, P27

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