TY - JOUR
T1 - Praseodymium and high-temperature superconductivity
T2 - Thermodynamic, structural, and critical correlations
AU - Lamberti, V. E.
AU - Rodriguez, M. A.
AU - Trybulski, J. D.
AU - Navrotsky, A.
N1 - Funding Information:
This work was supported by Department of Energy Grant No. DE-FG02-89ER45394 and by the New Jersey BISEC Teacher Improvement Project.
PY - 1996/5
Y1 - 1996/5
N2 - The enthalpies of formation and the partial molar enthalpies of oxidation of polycrystalline LnBa2Cu3O, (Ln = Pr, Nd, Eu, Gd, Dy, Ho, Tm) and Y1-xPrxBa2Cu3Oy (x = 0.0, 0.1, 0.2, 0.5, 0.8, 0.9, 1.0) have been determined at 298 K by drop-solution calorimetry. The thermodynamic characteristics of Pr123 follow the trends of the trivalent-ion-based Ln123 compounds. The thermodynamic data for the (Y, Pr) 123 solid solutions show nonideal solution behavior, but no x-dependent valence instability. The superconducting critical temperatures and the enthalpies of oxidation of the (Y, Pr)123 solid solutions are linearly related.
AB - The enthalpies of formation and the partial molar enthalpies of oxidation of polycrystalline LnBa2Cu3O, (Ln = Pr, Nd, Eu, Gd, Dy, Ho, Tm) and Y1-xPrxBa2Cu3Oy (x = 0.0, 0.1, 0.2, 0.5, 0.8, 0.9, 1.0) have been determined at 298 K by drop-solution calorimetry. The thermodynamic characteristics of Pr123 follow the trends of the trivalent-ion-based Ln123 compounds. The thermodynamic data for the (Y, Pr) 123 solid solutions show nonideal solution behavior, but no x-dependent valence instability. The superconducting critical temperatures and the enthalpies of oxidation of the (Y, Pr)123 solid solutions are linearly related.
UR - http://www.scopus.com/inward/record.url?scp=0030151106&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030151106&partnerID=8YFLogxK
U2 - 10.1557/JMR.1996.0132
DO - 10.1557/JMR.1996.0132
M3 - Article
AN - SCOPUS:0030151106
SN - 0884-2914
VL - 11
SP - 1061
EP - 1064
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 5
ER -