Mössbauer study of the Eu substitution in (Tl,Pb)-1212 superconductors

3Citations
Citations of this article
5Readers
Mendeley users who have this article in their library.
Get full text

Abstract

Eu-substituted (Tl0.6Pb0.4)(Sr0.9Ba 0.1)2(Ca1-xEux)Cu2O y, for x = 0.2, 0.4, and 0.6 compounds were prepared and investigated by 151Eu Mössbauer spectroscopy, XRD, SEM, EDAX and electrical resistance measurements. The 151Eu isomer shift reflected trivalent Eu in all cases, but it decreased with increasing Eu content. The monotonous change of the principal component, Vzz of electric field gradient with Eu content can be attributed mainly to the change in the lattice parameters due to substitution of Eu for Ca. The correlation between the 151Eu isomer shift and the superconducting critical temperature supports the hole filling mechanism (and change in the formal valence state of copper) to explain the suppression of superconductivity upon Eu substitution in this system. © 2005 Elsevier B.V. All rights reserved.

Cite

CITATION STYLE

APA

Kuzmann, E., Klencsár, Z., Sasvári, Á., Homonnay, Z., Mair, M., & Vértes, A. (2005). Mössbauer study of the Eu substitution in (Tl,Pb)-1212 superconductors. Physica C: Superconductivity and Its Applications, 420(1–2), 17–22. https://doi.org/10.1016/j.physc.2004.12.011

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free