Title of article :
On the synthesis and thermodynamic properties of SrLaGaO4-SrLaAlO4 solid solutions
Author/Authors :
A. Novosselov، نويسنده , , A.V. and Zimina، نويسنده , , G.V. and Filaretov، نويسنده , , A.A. and Shlyakhtin، نويسنده , , O.A. and Komissarova، نويسنده , , L.N. and Pajaczkowska، نويسنده , , A.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Abstract :
Continuous solid solutions with a tetragonal structure of K2NiF4-type are formed in the SrLaGaO4-SrLaAlO4 system. Samples of SrLaAlxGa1−xO4 (0.0 ≤ x ≤ 1.0) were obtained by the freeze-drying method and their structural parameters and thermodynamic properties were studied by X-ray diffraction and heat flux Calvet calorimetry. Composition dependence of lattice constants was observed to follow Vegard’s low. Heats of solution of the SrLaAlxGa1−xO4 samples in molten 2PbO·B2O3 were measured, and enthalpies of formation and mixing were calculated. The possibility of eliminating the lattice mismatch of these phases and YBa2Cu3Ox (x = 6.90–7.00) or Bi2Sr2CaCu2O8 by proper selection of the Al/Ga ratio makes them perspective substrate materials for high-temperature superconducting thin films.
Keywords :
A. Electronic materials , B. Chemical synthesis , C. X-ray diffraction , C. Differential scanning calorimetry , D. Thermodynamic properties
Journal title :
Materials Research Bulletin
Journal title :
Materials Research Bulletin
