Novel ternary compound Ce2RuAl: Synthesis, crystal structure, magnetic and electrical properties

被引：8
作者：
Murashova, E. [1 ]
Kurenbaeva, Zh. [1 ]
Tursina, A. [1 ]
Marushina, E. [1 ]
Yaroslavtsev, A. [2 ]
Leshchev, D. [2 ]
Seropegin, Y. [1 ]
Kaczorowski, D. [3 ]
机构：
[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119992, Russia
[2] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia
[3] Polish Acad Sci, Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 580卷
基金：
俄罗斯基础研究基金会;
关键词：
Intermetallics; Crystal structure; Magnetic measurements; X-ray diffraction; INTERMETALLIC COMPOUND; LA; CE; ALUMINIDES; CE23RU7MG4; PR; RE;
D O I：
10.1016/j.jallcom.2013.05.065
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：
The intermetallic phase Ce2RuAl was synthesized by arc melting the elemental components and subsequent annealing of the product at 823 K. Its crystal structure was determined from the single-crystal X-ray diffraction data and confirmed by powder X-ray diffraction at room temperature. The compound is of a new structural type related to the LaF3-type of structure: space group P6(3)cm, Z = 6, a = 7.8362(7) angstrom, c = 9.7510(9) angstrom, Pearson symbol hP24. Some Ce-Ru distances in the unit cell are unusually short being equal to 2.4821(6) angstrom. This structural feature brings about instability in the cerium valence state, directly evidenced in the XANES data and corroborated in the study of bulk physical behavior in Ce2RuAl. (C) 2013 Elsevier B.V. All rights reserved.
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页码：55 / 60
页数：6
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