TY - JOUR
T1 - High-pressure study of RSr2Cu2.7Mo0.3Oy with R=Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb
AU - Xiong, Q.
AU - Xue, Y. Y.
AU - Chu, J. W.
AU - Sun, Y. Y.
AU - Wang, Y. Q.
AU - Hor, P. H.
AU - Chu, C. W.
PY - 1993
Y1 - 1993
N2 - The hydrostatic-pressure effect on the superconducting transition temperature (Tc) of the stabilized Sr-based 1:2:3 compounds RSr2Cu2.7Mo0.3Oy with R=Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb has been determined up to 16 kbar. All Tc's are enhanced linearly by pressure at a rather rapid rate (dTc/dP). A drastic jump in dTc/dP vs ionic radius of R occurs near Dy, i.e., dTc/dP∼0.7 K/kbar for small R=Ho, Er, Tm, and Yb, and ∼0.4 K/kbar for the larger R's=Tb, Gd, Eu, and Sm. The results suggest that Cu(1) substitution by Mo is crucial in the stabilization of the Sr-based 1:2:3 compound. Several possibilities for the dTc/dP step detected are advanced.
AB - The hydrostatic-pressure effect on the superconducting transition temperature (Tc) of the stabilized Sr-based 1:2:3 compounds RSr2Cu2.7Mo0.3Oy with R=Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb has been determined up to 16 kbar. All Tc's are enhanced linearly by pressure at a rather rapid rate (dTc/dP). A drastic jump in dTc/dP vs ionic radius of R occurs near Dy, i.e., dTc/dP∼0.7 K/kbar for small R=Ho, Er, Tm, and Yb, and ∼0.4 K/kbar for the larger R's=Tb, Gd, Eu, and Sm. The results suggest that Cu(1) substitution by Mo is crucial in the stabilization of the Sr-based 1:2:3 compound. Several possibilities for the dTc/dP step detected are advanced.
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U2 - 10.1103/PhysRevB.47.11337
DO - 10.1103/PhysRevB.47.11337
M3 - Article
AN - SCOPUS:0001653671
VL - 47
SP - 11337
EP - 11340
JO - Physical Review B
JF - Physical Review B
SN - 0163-1829
IS - 17
ER -