Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Powder X-Ray Reference Patterns of Sr2RGaCu2Oy(R=Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, and Y)

Published

Author(s)

Winnie K. Wong-Ng, James A. Kaduk, Igor Levin, W Greenwood, J Dillingham

Abstract

X-ray Rietveld refinements were conducted on a series of 11 lanthanide phases, SR2RGaCu2O7 (R=Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, and Y) that are structurally related to the High Tc superconductor Ba2YCu3O7. Reference patterns for these compounds were prepared by using the Rietveld decomposition technique. The unit cell volumes of these compounds in general show the expected trend parallel to that of lanthanide contraction. These lattice parameters range from a = 22.8059(2) , b = 5.46031(5) and c = 5.37773(5) for R = Yb, to 23.129(1) , b = 5.587(2) and c = 5.4596(3) for R = La.
Citation
Journal of Research (NIST JRES) -
Volume
106 No. 4

Keywords

Rietveld refinements, Sr<sub>2</sub>RGaCu<sub>2</sub>O<sub>7</sub>, superconductor related phases, x-ray powder patterns

Citation

Wong-Ng, W. , A., J. , Levin, I. , Greenwood, W. and Dillingham, J. (2001), Powder X-Ray Reference Patterns of Sr<sub>2</sub>RGaCu<sub>2</sub>O<sub>y</sub>(R=Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, and Y), Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD (Accessed April 21, 2024)
Created August 1, 2001, Updated February 19, 2017