Micro-structure and Magnetization of the 80-K Superconductor, TbSr2Cu2.7Mo0.3O7+d

TL;DR

This study investigates the micro-structure and magnetic properties of an 80 K superconductor, TbSr2Cu2.7Mo0.3O7+d, confirming its single-phase nature, well-developed grains, and bulk superconductivity through various characterization techniques.

Contribution

It provides detailed micro-structural and magnetization analysis of a high-Tc superconductor with novel Mo doping, highlighting its superconducting and magnetic behavior.

Findings

Sample is single-phase with nominal stoichiometry.

Superconductivity observed below 80 K with full penetration field.

Normal state susceptibility follows Curie-Weiss behavior.

Abstract

The results of micro-structural and detailed magnetization studies are reported here for our recently published TbSr2Cu2.7Mo0.3O7+d superconductor with a transition temperature (Tc) at as high as 80 K [1]. From XRD and EDX the sample was confirmed to be of single-phase and possess the nominal cation stoichiometry. The SEM images showed well-developed grains for this ceramic high-Tc superconductor. Magnetization measurements at various temperatures and fields revealed bulk superconductivity below 80 K. Magnetization versus applied field (M vs. H) loops at various temperatures below the Tc exhibited clear full penetration field HP. In normal state (> 100 K) the susceptibility follows the Curie-Weiss behavior with an effective paramagnetic moment of 9.83 mB.