Boron-carbon system superconductive substance
AssigneeNational Research Institute for Metals
InventorsHijiri Kito, Shozo Ikeda, Hideki Abe, Hideaki Kitazawa, Takehiko Matsumoto
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Abstract
A new boron-carbon system superconductive substance has a nominal composition expressed R.sub.3 M.sub.4-x B.sub.4-y C.sub.3-z (where R is at least one element selected from the group consisting of Y, Sc and lanthanide series elements, M is at least one metal element categorized in VIII group of periodic table, and 0.ltoreq.x.ltoreq.1, 0.ltoreq.y.ltoreq.1, 0.ltoreq.z<3, except a case of x=y=1 and z=0).
Claims16
A superconductive substance having a nominal composition expressed by the formula R.sub.3 M.sub.4-x B.sub.4-y C.sub.3-z, where R is at least one element selected from the group consisting of Y, Sc and lanthanide series elements, M is at least one metal element selected from Group VIII of the Periodic Table, 0.ltoreq.x.ltoreq.1, 0.ltoreq.y.ltoreq.1, and 0.ltoreq.z<3, provided that z.noteq.0 when x=y=1.
A superconductive article of manufacture, comprising a superconductive substance having a nominal composition expressed by the formula R.sub.3 M.sub.4-x B.sub.4-y C.sub.3-z, where R is at least one element selected from the group consisting of Y, Sc and lanthanide series elements, M is at least one metal element selected from Group VIII of the Periodic Table, 0.ltoreq.x0.ltoreq.1, 0.ltoreq.y.ltoreq.1, and 0.ltoreq.z<3, provided that z.noteq.0 when x=y=1.
Dependencies are inferred from the claim text.