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・ Niobium dioxide
・ Niobium monoxide
・ Niobium nanowire
・ Niobium nitride
・ Niobium oxide
・ Niobium oxychloride
・ Niobium pentaiodide
・ Niobium pentoxide
・ Niobium triselenide
・ Niobium(IV) chloride
・ Niobium(IV) fluoride
・ Niobium(V) bromide
・ Niobium(V) chloride
・ Niobium(V) ethoxide
・ Niobium(V) fluoride
Niobium-germanium
・ Niobium-tin
・ Niobium-titanium
・ Niobocene dichloride
・ Niobrara
・ Niobrara ambersnail
・ Niobrara County High School
・ Niobrara County School District Number 1
・ Niobrara County, Wyoming
・ Niobrara Formation
・ Niobrara National Forest
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・ Niobrara River
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Niobium-germanium : ウィキペディア英語版
Niobium-germanium
Niobium-germanium (Nb3Ge) is a metallic chemical compound of niobium (Nb) and germanium (Ge). It has A15 phase structure.

It is a superconductor with a critical temperature of 23.2 kelvin (K).
Sputtered films have been reported to have an upper critical field of 37 teslas at 4.2 K.
==History==
Nb3Ge was discovered to be a superconductor in 1973 〔(【引用サイトリンク】 Physics Today )〕 and for 13 years (until the discovery in 1986 of the cuprate superconductors) it held the record as having the highest critical temperature.〔(【引用サイトリンク】 publisher = TheFreeDictionary )
It has not been as widely used for superconductive applications as niobium-tin or niobium-titanium.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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