EPR study of some rare-earth ions (Dy3+, Tb3+ and Nd3+) in YBa2Cu3O6 compound
M.R. Gafurov,, V.A. Ivanshin, I.N. Kurkin, M.P. Rodionova, H. Keller,, M. Gutmann, U. Staub
TL;DR
This study uses low-temperature X-band EPR to analyze the magnetic properties of Dy3+, Tb3+, and Nd3+ ions in YBa2Cu3O6, revealing spectra characteristics and effects on superconductivity.
Contribution
It provides the first detailed EPR analysis of Dy3+ and Tb3+ in this compound and examines how Tb3+ influences superconductivity suppression.
Findings
Dy3+ and Tb3+ spectra identified
Tb3+ EPR used to study superconductivity suppression
Nd3+ resonance masked by Cu2+ resonance
Abstract
We investigate the low temperature X-band electron paramagnetic resonance (EPR) of YBa2Cu3O6 compounds with x = 6.0 doped with Dy3+, Tb3+, and Nd3+. The EPR spectra of Dy3+ and Tb3+ have been identified. The EPR of Tb3+ is used also to study the effect of suppression of high Tc superconductivity. The EPR of Nd3+ is probably masked by the intense resonance of Cu2+. All experimental EPR results compare well with theoretical estimations.
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