R
Roland Höhne
Researcher at Leipzig University
Publications - 50
Citations - 2972
Roland Höhne is an academic researcher from Leipzig University. The author has contributed to research in topics: Ferromagnetism & Magnetization. The author has an hindex of 21, co-authored 50 publications receiving 2863 citations.
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Journal ArticleDOI
Induced magnetic ordering by proton irradiation in graphite.
TL;DR: Evidence that proton irradiation of energy 2.25 MeV on highly oriented pyrolytic graphite samples triggers ferro- or ferrimagnetism is provided and magnetic ordering is stable at room temperature.
Journal ArticleDOI
Magnetic carbon (Retracted Article. See vol 440, pg 707, 2006)
Tatiana L. Makarova,Bertil Sundqvist,Roland Höhne,Pablo Esquinazi,Yakov Kopelevich,Peter Scharff,Valery A. Davydov,L. S. Kashevarova,A. V. Rakhmanina +8 more
TL;DR: It appears that the high-pressure, high-temperature polymerization process results in a magnetically ordered state of C60, which exhibits features typical of ferromagnets: saturation magnetization, large hysteresis and attachment to a magnet at room temperature.
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Ferromagnetism in oriented graphite samples
Pablo Esquinazi,Annette Setzer,Roland Höhne,C. Semmelhack,Yakov Kopelevich,Daniel Spemann,Tilman Butz,Bernd Kohlstrunk,Mathias Lösche +8 more
TL;DR: In this article, the magnetization of various well characterized samples of highly oriented pyrolitic graphite (HOPG), Kish graphite, and natural graphite was investigated to investigate the recently reported ferromagneticlike signal and its possible relation to magnetically impurities.
Journal ArticleDOI
$π$-Electron Ferromagnetism in Metal Free Carbon Probed by Soft X-Ray Dichroism
Hendrik Ohldag,Tolek Tyliszczak,Roland Höhne,Daniel Spemann,Pablo Esquinazi,M. Ungureanu,Tilman Butz +6 more
TL;DR: It is demonstrated that the magnetic order in the investigated system originates only from the carbon pi-electron system.