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New Crystal Data for Mo.63Ru.37 (Mo5Ru3) A Superconducting Sigma Phase

Published online by Cambridge University Press:  28 October 2013

Svend Erik Rasmussen  and
Britta Lundtoft
Svend Erik Rasmussen
Affiliation:
Department of Inorganic Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
Britta Lundtoft
Affiliation:
Department of Inorganic Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
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Abstract

New crystal data for the intermetallic sigma phase in the Mo-Ru-system are reported and the indexing of the pattern given in the Powder Diffraction File has been extended. The material is tetragonal, P42/mnm (No. 136) with a = 9.5652(4) Å; c = 4.9362(3) Å; Vol = 451.63(7) Å3, Dc = 10.79 Mg m−3 for the composition Mo.63Ru.37, and a = 9.5569(21) Å; c = 4.9418(20) Å; Vol = 451.35(38) Å3, Dc = 10.75 Mg m−3 for Mo.70Ru.30.

Powder data were obtained by the Guinier method and the indexing was corroborated by single crystal data. Transition to the superconducting state took place in the interval 6.8 K – 8.8 K.

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Type
Research Article
Information
Powder Diffraction , Volume 2 , Issue 1 , March 1987 , pp. 29 - 30
Copyright
Copyright © Cambridge University Press 1987

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