Superconductivity and weak ferromagnetism in Eu1.4Ce0.6Ru1-xFexSr 2Cu2O10-δ

I. Felner*, U. Asaf

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

The system Eu1.4Ce0.6Ru1-xFexSr 2Cu2O10-δ with x = 0, 0.13 and 0.25 has been studied by dc magnetometry to determine the superconducting and weak-ferromagnetic (W-FM) properties. Eu1.4Ce0.6RuSr2Cu2O 10-δ is a magneto-superconductor with TM(Ru) = 122 and TC = 32 K thus TM ≫ TC. Superconductivity is confined to the CuO2 planes, and the magnetic ordering is due to the Ru sublattice. The effect of Fe (x = 0.13 and 0.25) is: (i) to suppress SC in both compounds and (ii) to diminish the weak-ferromagnetic (W-FM) properties (e.g. the saturation moment (Msat) and the remanent moments) of the Ru sublattice. The fast drop in Msat at 5 K scales with Fe concentration. Mossbauer spectroscopy studies reveal two inequivalent Fe sites, and that in both sites, Fe does not order magnetically. This proves that the W-FM state is due to the Ru site.

Original languageEnglish
Pages (from-to)97-103
Number of pages7
JournalPhysica C: Superconductivity and its Applications
Volume292
Issue number1-2
DOIs
StatePublished - 10 Dec 1997

Fingerprint

Dive into the research topics of 'Superconductivity and weak ferromagnetism in Eu1.4Ce0.6Ru1-xFexSr 2Cu2O10-δ'. Together they form a unique fingerprint.

Cite this