Ruthenium oxide having a negative thermal expansion coefficient, and useable as a thermal expansion inhibitor

A ruthenium compound exhibits large negative thermal expansion. The ruthenium oxide is represented by the formula (1) Ca2−xRxRu1−yMyO4+z (wherein R represents at least one element selected from among alkaline earth metals and rare earth elements; M represents at least one element selected from among...

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Bibliographic Details
Main Authors Takenaka, Koshi, Okamoto, Yoshihiko, Inoue, Naruhiro, Shinoda, Tsubasa
Format Patent
LanguageEnglish
Published 09.06.2020
Subjects
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
INORGANIC CHEMISTRY
METALLURGY
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Summary:A ruthenium compound exhibits large negative thermal expansion. The ruthenium oxide is represented by the formula (1) Ca2−xRxRu1−yMyO4+z (wherein R represents at least one element selected from among alkaline earth metals and rare earth elements; M represents at least one element selected from among Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, and Ga; and the following relations are satisfied: 0≤x<0.2, 0≤y<0.3, and −1<z<−0.02).
Bibliography:Application Number: US201716075841