OXYGEN NONSTOICHIOMETRY OF (ND2/3CE1/3)(4)(BA2/3ND1/3)(4)CU6O16+X

被引：5
|
作者：
PATRAKEEV, MV
LEONIDOV, IA
LAKHTIN, AA
KOZHEVNIKOV, VL
NIKOLAEV, AV
机构：
[1] RUSSIAN ACAD SCI,DIV URAL,INST SOLID STATE CHEM,SVERDLOVSK 620219,RUSSIA
[2] RUSSIAN FRENCH JOINT VENTURE QUORUS,SVERDLOVSK 620075,RUSSIA
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 1995年 / 120卷 / 01期
关键词：
D O I：
10.1006/jssc.1995.1389
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The equilibrium oxygen content of (Nd2/3Ce1/3)(4)(Ba-2/3 Nd-1/3)(4)Cu6O16+x was measured by coulomeric titration in the temperature range 550-820 degrees C and at oxygen pressures between 10(-3) and 1 atm. From the results, the partial molar enthalpy and entropy of oxygen were calculated as functions of the oxygen content. The data were explained based on a point defects model and the equilibrium constants of the redox and charge disproportionation reactions involved were derived. A phase transition near the point x approximate to 1.83, which nominally corresponds to one trivalent copper cation per elementary unit, was observed. (C) 1995 Academic Press,Inc.
引用
收藏
页码：146 / 150
页数：5
相关论文
共 50 条
  • [1] Electroconductivity and thermal EMF of (Nd2/3Ce1/3)(4)(Ba2/3Nd1/3)(4)Cu6O16+x at high temperature
    Patrakeev, MV
    Leonidov, IA
    Lakhtin, AA
    Kozhevnikov, VL
    [J]. FIZIKA TVERDOGO TELA, 1996, 38 (09): : 2650 - 2655
  • [2] Thermodynamics of Interaction between (Nd2/3Ce1/3)4(Ba2/3Nd1/3)4Cu6O16$P LU@x and Gas-Phase Oxygen
    [J]. 1776, (69):
  • [3] SUPPRESSION OF SUPERCONDUCTIVITY BY SUBSTITUTION OF TH FOR CE IN (ND2/3CE1/3)2(BA2/3ND1/3)2CU3O9-D
    GOPALAKRISHNAN, IK
    YAKHMI, JV
    [J]. PHYSICA C, 1994, 232 (1-2): : 127 - 130
  • [4] High-temperature electrical conductivity and thermoelectric power coefficient of (Nd2/3Ce1/3)4(Ba2/3Nd1/3)4CuO16+x$ /
    Patrakeev, M. V.
    Leonidov, I. A.
    Lakhtin, A. A.
    Kozhevnikov, V. L.
    [J]. Physics of the Solid State, 38 (09):
  • [5] Manifestation of T′ and 1-2-3 features in [Nd2/3(Ce1-xThx)1/3]2(Ba2/3Nd1/3)2Cu3O9-δ compounds:: a XANES study
    Gupta, S
    Suba, R
    Padalia, BD
    Prakash, O
    Gopalakrishnan, IK
    Yakhmi, JV
    [J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1999, 314 (1-2): : 98 - 104
  • [6] Manifestation of T′ and 1-2-3 features in [Nd2/3(Ce1-xThx)1/3]2 (Ba2/3Nd1/3)2Cu3O9-δ compounds: A XANES study
    Department of Physics, Indian Inst. Technol., Powai, 400076, Mumbai, India
    不详
    不详
    [J]. Phys C Supercond Appl, 1 (98-104):
  • [7] PHONON-SCATTERING SPECTRA OF (EU2/3CE1/3)2(BA2/3EU1/3)2CU3O9 AND (ER2/3CE1/3)2(BA2/3LA1/3)2CU3O9
    YOSHIDA, M
    TAJIMA, S
    MIZUO, Y
    WADA, T
    ICHINOSE, A
    YAEGASHI, Y
    KOSHIZUKA, N
    YAMAUCHI, H
    TANAKA, S
    [J]. PHYSICAL REVIEW B, 1991, 44 (02): : 782 - 788
  • [8] RAMAN-SCATTERING SPECTRA OF (SM2/3CE1/3)2(BA2/3SM1/3)2CU3O9
    YOSHIDA, M
    TAJIMA, S
    MIZUO, Y
    WADA, T
    YAEGASHI, Y
    ICHINOSE, A
    YAMAUCHI, H
    KOSHIZUKA, N
    TANAKA, S
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1991, 60 (04) : 1204 - 1207
  • [9] High pressure oxygen treatment and the substitution of Sr for Ba on (Nd1/3Ba2/3)2(Ce1/3Nd2/3)2Cu3Oy superconductor
    [J]. Nobumasa, Hitoshi, 1600, (28):
  • [10] THE RARE-EARTH HTSC FAMILY BA2(Y)CU3O7, BA2(ND)CU3O7, BA2(SM)CU3O7, BA2(EU)CU3O7, BA2(GD)CU3O7, BA2(DY)CU3O7, BA2(HO)CU3O7, BA2(ER)CU3O7, BA2(TM)CU3O7 STRUCTURAL, ELECTRICAL AND MAGNETIC STUDIES
    ALARIOFRANCO, MA
    MORANMIGUELEZ, E
    SAEZPUCHE, R
    GARCIAALVARADO, F
    AMADOR, U
    BARAHONA, M
    FERNANDEZ, F
    PEREZFRIAS, MT
    VICENT, JL
    [J]. MATERIALS RESEARCH BULLETIN, 1988, 23 (03) : 313 - 321
12345