Christine Michel, M. Hervieu
Structural and superconducting properties of new cations substituted mercury based oxides are described. They are mainly characterized by [Hg1 - xMxO3]o monolayers, however a compound with doubled [Hg1 - xMxO3]o layer is described for the first time. Critical temperatures vary in a large range 0 ≤ Tc ≤ 130 K, but they are lower than those of the parent 'all mercury' oxides. The influence of annealing under various atmospheres is discussed. The results indicate that superconductivity only appears when lanthanum is partially substituted for strontium, and in the case of lead, the critical temperature increases with the amount of lanthanum. Oxygen pressure annealing has little effect on the superconducting properties, while reducing atmosphere (Ar-H₂ mixture) treatments destroy superconductivity.
@article{2efaf45f-b75e-4810-9e86-dc40f5511ae3,
title={Nouveaux supraconducteurs haute temp rat},
author={Christine Michel and M. Hervieu},
year={2026},
language={en}
}TY - JOUR TI - Nouveaux supraconducteurs haute temp rat AU - Christine Michel AU - M. Hervieu PY - 2026 LA - en ER -
Unknown, Unknown
This chapter discusses metal casting processes, highlighting the diversity and common characteristics among them. The objective is to elucidate the fu
Unknown, Unknown
This study focuses on the fundamental characteristics of solid iron, which is predominantly composed of iron atoms and provides a basis for understand
Ir. Méshac KIME ILUNGA
Ce document traite des procédés métallurgiques spéciaux, en mettant particulièrement l'accent sur l'extraction liquide-liquide, un processus mis au po
Copper solvent extraction units at large hydrometallurgical plants face constraints in metal recovery, phase disengagement, and reagent consumption, d
Non spécifié
L'hydrométallurgie du cuivre, principalement axée sur les minerais oxydés facilement solubles, s'applique également aux minerais sulfurés ou mixtes ap