Thermochemistry of Nd4-2xBa2+2xCu2Oz (x=0, 0.1)

被引：4

作者：

Efremova, M. M. ^{[1
]}

Popova, A. A. ^{[1
]}

Monayenkova, A. S. ^{[1
]}

Tiphlova, L. A. ^{[1
]}

Kovba, M. L. ^{[1
]}

Dobrokhotova, G. V. ^{[2
]}

Ogorodova, L. P. ^{[3
]}

机构：

[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia

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

[3] Moscow MV Lomonosov State Univ, Dept Geol, Moscow 119899, Russia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 452卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

ceramics; thermochemistry; enthalpy; heat capacity;

D O I：

10.1016/j.jallcom.2007.01.181

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：

Two various techniques of solution calorimetry were applied to determine thermochemical properties of Nd4-2xBa2+xCu2Oz solid solutions (x=0, 0.1). A satisfactory agreement between results of different experiments is observed. The heat capacity of Nd4-2xBa2+xCu2Oz has been measured by using a differential scanning calorimeter (DSC) in the temperature range of 173-573 K. The results were consistent with the values calculated by Neumann-Kopp's law. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：99 / 101

页数：3

共 19 条

[1] HEAT-CAPACITY OF MINERALS IN THE SYSTEM NA2O-K2O-CAO-MGO-FEO-FE2O3-AL2O3-SIO2-TIO2-H2O-CO2 - REPRESENTATION, ESTIMATION, AND HIGH-TEMPERATURE EXTRAPOLATION [J].

BERMAN, RG ;

BROWN, TH .

CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 1985, 89 (2-3) :168-183

[2]

Chase M. W., 1985, JANAF THERMOCHEMICAL

[3] The enthalpies of formation of lanthanide compounds III.: Ln2O3(cr) [J].

Cordfunke, EHP ;

Konings, RJM .

THERMOCHIMICA ACTA, 2001, 375 (1-2) :65-79

[4] ENTHALPY OF FORMATION OF BARIUM MONOXIDE [J].

FITZGIBBON, GC ;

HUBER, EJ ;

HOLLEY, CE .

JOURNAL OF CHEMICAL THERMODYNAMICS, 1973, 5 (04) :577-582

[5]

GLUSHKO VP, 1992, THERMICHESKIE KONSTA, V6

[6] Reactivity between Nd1+xBa2-xCu3O7-δ+x/2 and Nd4-2zBa2+2zCu2-zO10-2z phases in superconducting NdBaCuO powders and melt textured bulk samples [J].

Gombos, M ;

Gomis, V ;

Carrillo, AE ;

Vecchione, A ;

Tedesco, P ;

Pace, S ;

Obradors, X .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2003, 16 (08) :865-870

[7]

ICHING AL, 1999, J NONCRYST SOLIDS, V243, P272

[8]

KISELEVA IA, 1979, GEOKHIMIYA+, P1811

[9] Gibbs free energy of formation of the Nd2BaCuO5 phase determined by the e.m.f. method [J].

Kopyto, M ;

Kowalik, E ;

Fitzner, K .

JOURNAL OF CHEMICAL THERMODYNAMICS, 2003, 35 (05) :733-746

[10]

Merli L, 1998, RADIOCHIM ACTA, V82, P3

← 1 2 →