Synthesis, crystal structure and physical properties of Ce 2Ru2Ga3. Intermetallics Volume 38, 2013, Pages 23-29

14 сентября 2018
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Вид публикации Статья
Контактные данные автора публикации Murashova, E.a , Shablinskaya, K.a, Kurenbaeva, Z.a, Yaroslavtsev, A.b, Menushenkov, A.b, Chernikov, R.c, Grishina, O.b, Nesterenko, S.a, Seropegin, Y.a, Kaczorowski, D.d a Department of Chemistry, Moscow State Univ
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Аннотация

The novel compound Ce2Ru2Ga3 was synthesized by arc-melting the elemental constituents in argon atmosphere followed by long-term annealing at 873 K. It forms in an orthorhombic system, with a crystal structure of new type (space group P212 121, Z = 4, oP28) and the lattice parameters: a = 4.488(2) Å, b = 6.912(4) Å, c = 17.092(9) Å. The gallide is structurally related to intermetallics crystallizing with the NdRh 2Sn4-type structure or its derivatives. It represents an unique family of materials with abnormally short Ce-Ru distances, which usually exhibit some instability of the valence state of cerium atoms. Based on the low-temperature magnetic and electrical transport data, as well as the X-ray absorption data, Ce2Ru2Ga3 has been characterised as another intermediate valence system. © 2013 Elsevier Ltd. All rights reserved.



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Author keywords

A. Rare-earth intermetallics; B. Crystal chemistry of intermetallics; B. Magnetic properties; F. Diffraction; F. Electron microprobe



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Indexed keywords

Crystal chemistry of intermetallics; Electrical transport; F. Diffraction; F. Electron microprobe; Intermediate valence; Orthorhombic systems; Rare earth intermetallics; Structure and physical properties
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