ChemInform Abstract: Superconductivity at 39 K in Magnesium Diboride

Autor:	Yuji Zenitani, Jun Nagamatsu, Jun Akimitsu, T. Muranaka, Norimasa Nakagawa
Rok vydání:	2010
Předmět:	Superconductivity Crystal Magnetization chemistry.chemical_compound Copper oxide chemistry Condensed matter physics Electrical resistivity and conductivity Transition temperature Magnesium diboride General Medicine
Zdroj:	ChemInform. 32
ISSN:	1522-2667 0931-7597
Popis:	In the light of the tremendous progress that has been made in raising the transition temperature of the copper oxide superconductors (for a review, see ref. 1), it is natural to wonder how high the transition temperature, Tc, can be pushed in other classes of materials. At present, the highest reported values of Tc for non-copper-oxide bulk superconductivity are 33 K in electron-doped CsxRbyC60 (ref. 2), and 30 K in Ba1-xKxBiO3 (ref. 3). (Hole-doped C60 was recently found4 to be superconducting with a Tc as high as 52 K, although the nature of the experiment meant that the supercurrents were confined to the surface of the C60 crystal, rather than probing the bulk.) Here we report the discovery of bulk superconductivity in magnesium diboride, MgB2. Magnetization and resistivity measurements establish a transition temperature of 39 K, which we believe to be the highest yet determined for a non-copper-oxide bulk superconductor.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7108a9d0d65ce5ff0509c62a3d3b3c00 https://doi.org/10.1002/chin.200121009 Zobrazit plný text záznamu Plný text