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DTSTART;TZID=Europe/Paris:20260129T140000
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DTSTAMP:20260412T001511
CREATED:20260124T094220Z
LAST-MODIFIED:20260126T094328Z
UID:11880-1769695200-1769698800@fermi.univ-tlse3.fr
SUMMARY:Magnetic field sorting of superconducting graphite particles with Tc > 400K. - (Manuel Nunez-Regueiro /  LNCMI / Seminar). - 29/01/2026\, 14H
DESCRIPTION:Seminar LNCMI \nManuel Nunez-Regueiro \, Institut Néel \nSeminar LNCMI\, 29/01/2026\, 14H\, Visio \nAbstract\nIt has been claimed that graphite hosts superconductivity at room temperature\, although all efforts to isolate it have been vain.  Here we report separation methods that use magnetic field gradients to sort the superconducting from  normal grains out of industrial graphite powders. We have obtained a concentrate of above room temperature superconducting particles. Electrical resistance measurements on agglomerates of sorted grains of synthetic\, natural and spectroscopically pure graphite all show transition temperatures up Tc\,onset ∼700 K with  zero resistance up to ∼500 K. Magnetization measurements confirm these values through jumps  at Tc in the zero field cooled curves\, and by the occurrence of diamagnetic hysteretic cycles  shrinking with temperature. Transmission electron microscope images yield a hint of the novel structure of these grains. \nLieu : Salle Pauthenet in Grenoble \nLien Zoom : https://univ-grenoble-alpes-fr.zoom.us/j/94228207316?pwd=khTdznxeFy1ZUYkYftQ0QSox6Fz3iK.1
URL:https://fermi.univ-tlse3.fr/event/magnetic-field-sorting-of-superconducting-graphite-particles-with-tc-400k-manuel-nunez-regueiro-lncmi-seminar-29-01-2026-14h/
LOCATION:Visio
CATEGORIES:Events,LNCMI,Seminars
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