Incorporation of platinum atoms in a silicon-free boride of the YB50-type structure

JOURNAL OF ALLOYS AND COMPOUNDS

卷:675

Article

Sologub, Oksana¹  Salamakha, Leonid P.¹  Michor, Herwig¹  Bauer, Ernst¹  Stoeger, Berthold²  Rogl, Peter F.³ 

[1] TU Wien, Inst Solid State Phys, A-1040 Vienna, Austria

[2] TU Wien, Inst Chem Technol & Analyt, A-1040 Vienna, Austria

[3] Univ Vienna, Inst Mat Chem & Res, A-1090 Vienna, Austria

关键词: Boride;    Transition metal;    Single crystal X-ray diffraction;    YB45-xPty;   

DOI  :  10.1016/j.jallcom.2016.03.015

来源: Elsevier

【 摘 要 】

A new Pt-doped yttrium boride of the YB50 family, YB45-xPty, x = 2.12, y = 0.21 (space group Pbam, a = 16.6246 (4) angstrom, b = 17.6453 (4) angstrom, c = 9.4167 (2) angstrom), has been synthesized by arc-melting pure elements and subsequent annealing at 1123 K. A single crystal has been studied in order to assess the Pt-doping effect on the crystal structure. Insertion of Pt in two 4h interstitial sites of the boron atom framework leads to the transformation of -[B-12]-[B-12]-icosahedral chain into -[B-11]-Pt-[B-11]-for 38.6% of them as well as, to a lesser extent, induces disorder into the [B-15] polyhedron and neighboring interstitial B site (97.3% vs 2.7%). (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

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