Pt5Mn2Si, the first platinum-rich ternary intermetallic of the Rh5Ge3 structure type: Synthesis, crystal and electronic structure, and magnetic properties

被引：1

作者：

Makhaneva, Anastasiya Yu. ^{[1
]}

Zakharova, Elena Yu. ^{[1
]}

Nesterenko, Sergey N. ^{[1
]}

Kazakov, Sergey M. ^{[1
]}

Lyssenko, Konstantin A. ^{[1
,2
]}

Efimov, Nikolay N. ^{[3
]}

Kuznetsov, Alexey N. ^{[1
]}

机构：

[1] Lomonosov Moscow State Univ, Dept Chem, Leninskie Gory 1-3, Moscow 119991, Russia

[2] Natl Res Univ Higher Sch Econ, Miasnitskaya Str 20, Moscow 101000, Russia

[3] Russian Acad Sci, NS Kurnakov Inst Gen & Inorgan Chem, Leninsky Prosp 31,GSP 1, Moscow 119991, Russia

来源：

INTERMETALLICS | 2024年 / 164卷

基金：

俄罗斯科学基金会;

关键词：

Intermetallics; Crystal chemistry; Density functional theory; Electronic structure; Bonding; Magnetic properties; PALLADIUM-INDIUM FRAGMENTS; X-RAY; ZUM AUFBAU; GALLIUM; PHASES; GERMANIUM; METALS; NICKEL; SYSTEM; ALLOYS;

D O I：

10.1016/j.intermet.2023.108130

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

New ternary intermetallic Pt5Mn2Si was obtained in the form of single crystals and phase-pure polycrystalline bulk samples. This compound is only the second one found in the Pt-Mn-Si system. Pt5Mn2Si (space group Pbam, a = 5.4355(3) angstrom, b = 10.5955(7) angstrom, c = 4.0024(3) angstrom, Z = 2) is isotypic with the Rh5Ga2As structure, an ordered ternary variation of the Rh5Ge3 structure type. This structure type is fairly rare, and Pt5Mn2Si is only the second ternary intermetallic adopting this structure. Magnetic measurements show that the compound has magnetic transition at ca. 80 K, most likely attributed to ferrimagnetic ordering of manganese spins. DFT calculations predict Pt5Mn2Si to be a metallic conductor. Chemical bonding analysis shows a pattern of localized pairwise-like Pt-Mn and Pt-Si bonds.

引用

页数：8

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