SUBSTITUTION EFFECT IN Pr-DOPED YBCO-Reference-Cited by-同舟云学术

SUBSTITUTION EFFECT IN Pr-DOPED YBCO

Published:2006-08-10 Issue:20 Volume:20 Page:2899-2907
ISSN:0217-9792
Container-title:International Journal of Modern Physics B
language:en
Short-container-title:Int. J. Mod. Phys. B

Author:

ZHANG L.¹²,WANG M.³,XU Y. Y.²

Affiliation:

1. School of Sciences, Lanzhou University of Technology, Lanzhou, 730050, People's Republic of China

2. Materials Physics Laboratory, State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, People's Republic of China

3. School of Sciences, Beijing University of Aeronautics & Astronautics, Beijing 100083, People's Republic of China

Abstract

A series of samples of Y 1-x Pr x Ba 2 Cu 3 O y ( YPrBCO ) with 0.05 ≤ x ≤ 0.6 was synthesized and characterized by DC magnetization, X-ray diffraction (XRD), and Rietveld refinement. It is found that besides Pr substitution for Y , a part of Pr substituted for Ba in YBa 2 Cu 3 O y (YBCO), and the amount of Pr in the Y and Ba positions, respectively, is estimated by the refinement with the help of bond valence sum (BVS) calculation. By comparing the correlation of structural changes such as Ba-O (4) and Cu (1, 2)- O (4) bond lengths and superconductivity between our system with the reference system where Pr just replaces Y , structural evidences are found to explain Pr substitution for Ba suppresses Tc more strongly than that for Y .

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217979206034893

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