The investigation of EPR paramagnetic probe line width and shape temperature dependence in high-temperature superconductors of Bi-Pb-Sr-Ca-Cu-O system
J.G.Chigvinadze, J.V.Acrivos, I.G.Akhvlediani, M.I.Chubabria,, T.L.Kalabegishvili, T.I.Sanadze
TL;DR
This study investigates the temperature-dependent behavior of EPR line width and shape in a high-temperature superconductor, revealing potential magnetic phase formation in the normal state near 175 K.
Contribution
It provides new insights into magnetic phase behavior in Bi-Pb-Sr-Ca-Cu-O superconductors through EPR line width analysis.
Findings
EPR line width peaks near 175 K in the normal state
Observation of increasing line width over ~17 minutes suggests magnetic phase formation
Identifies temperature region with magnetic phase development in the material
Abstract
The work is related with the finding out of magnetic phases in strongly anisotropic high-temperature superconductor Bi1,7Pb0,3Sr2Ca2Cu3O10-d in the temperature region where the superconductor is in the normal state. It was studied the temperature dependence of the paramagnetic probe EPR line width. In the normal state at T>Tc near 175 K it was revealed a pick in the temperature dependence of line width. In this region it was observed the time increase of the line width with the characteristic time ~ 17 min. This shows the possibility of magnetic phase formation in this material.
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