New ternary transition metal borides containing uranium and rare earth elements

P. Rogl; L. Delong

doi:10.1016/0022-5088(83)90099-1

New ternary transition metal borides containing uranium and rare earth elements

P. Rogl, L. Delong

Physics And Astronomy

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Abstract

The new ternary actinide metal diborides U₂MoB₆, U₂ReB₆, U₂OsB₆, URuB₄ and UOsB₄ were prepared and found to crystallize with either the Y₂ReB₆ or the ThMoB₄ type of structure. LuRuB₄ and LuOsB₄ crystallize with the YCrB₄ type of structure. In a ternary series of solid solutions YRh₃B_1-x (0 ≤ x ≤ 0.45 at 1400 °C), boron was found to stabilize a Cu₃Au type of structure. The superconductivity of the new uranium compounds and of a series of ternary transition metal borides was investigated; no superconductivity was observed for temperatures as low as 1.3-1.5 K. The cubic perovskite or filled Cu₃Au structure is discussed as a type which is very unfavorable for the occurrence of superconductivity.

Original language	English
Pages (from-to)	97-106
Number of pages	10
Journal	Journal of the Less-Common Metals
Volume	91
Issue number	1
DOIs	https://doi.org/10.1016/0022-5088(83)90099-1
State	Published - May 1983

Bibliographical note

Funding Information:
P.R. wishes to express his gratitude to the Austrian Science Foundation (Fonds zur Forderung der Wissenschaftlichen Forschung in Gsterreich) for Grant 4605. His thanks are also due to the Hochschuljubilaumsstiftung der Stadt Wien for the KD-530 microdensitometer. The authors wish to thank Dr. D. C. Johnston, Exxon Research and Engineering Company, for his kind permission to use his unpublished data and for helpful discussions.

ASJC Scopus subject areas

General Engineering

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title = "New ternary transition metal borides containing uranium and rare earth elements",

abstract = "The new ternary actinide metal diborides U2MoB6, U2ReB6, U2OsB6, URuB4 and UOsB4 were prepared and found to crystallize with either the Y2ReB6 or the ThMoB4 type of structure. LuRuB4 and LuOsB4 crystallize with the YCrB4 type of structure. In a ternary series of solid solutions YRh3B1-x (0 ≤ x ≤ 0.45 at 1400 °C), boron was found to stabilize a Cu3Au type of structure. The superconductivity of the new uranium compounds and of a series of ternary transition metal borides was investigated; no superconductivity was observed for temperatures as low as 1.3-1.5 K. The cubic perovskite or filled Cu3Au structure is discussed as a type which is very unfavorable for the occurrence of superconductivity.",

author = "P. Rogl and L. Delong",

note = "Funding Information: P.R. wishes to express his gratitude to the Austrian Science Foundation (Fonds zur Forderung der Wissenschaftlichen Forschung in Gsterreich) for Grant 4605. His thanks are also due to the Hochschuljubilaumsstiftung der Stadt Wien for the KD-530 microdensitometer. The authors wish to thank Dr. D. C. Johnston, Exxon Research and Engineering Company, for his kind permission to use his unpublished data and for helpful discussions.",

year = "1983",

month = may,

doi = "10.1016/0022-5088(83)90099-1",

language = "English",

volume = "91",

pages = "97--106",

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AU - Delong, L.

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PY - 1983/5

Y1 - 1983/5

N2 - The new ternary actinide metal diborides U2MoB6, U2ReB6, U2OsB6, URuB4 and UOsB4 were prepared and found to crystallize with either the Y2ReB6 or the ThMoB4 type of structure. LuRuB4 and LuOsB4 crystallize with the YCrB4 type of structure. In a ternary series of solid solutions YRh3B1-x (0 ≤ x ≤ 0.45 at 1400 °C), boron was found to stabilize a Cu3Au type of structure. The superconductivity of the new uranium compounds and of a series of ternary transition metal borides was investigated; no superconductivity was observed for temperatures as low as 1.3-1.5 K. The cubic perovskite or filled Cu3Au structure is discussed as a type which is very unfavorable for the occurrence of superconductivity.

AB - The new ternary actinide metal diborides U2MoB6, U2ReB6, U2OsB6, URuB4 and UOsB4 were prepared and found to crystallize with either the Y2ReB6 or the ThMoB4 type of structure. LuRuB4 and LuOsB4 crystallize with the YCrB4 type of structure. In a ternary series of solid solutions YRh3B1-x (0 ≤ x ≤ 0.45 at 1400 °C), boron was found to stabilize a Cu3Au type of structure. The superconductivity of the new uranium compounds and of a series of ternary transition metal borides was investigated; no superconductivity was observed for temperatures as low as 1.3-1.5 K. The cubic perovskite or filled Cu3Au structure is discussed as a type which is very unfavorable for the occurrence of superconductivity.

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New ternary transition metal borides containing uranium and rare earth elements

Abstract

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