New Ternary Lanthanide Transition-Metal Tellurides: Dy6MTe2, M=Fe, Co, Ni

✍ Scribed by Naima Bestaoui; P.Subramanya Herle; John D. Corbett

• Book ID: 102608646
• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 212 KB
• Volume: 155
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.2000.8880

✦ Synopsis

The isotypic title compounds together with R 6 CoTe 2 for R ‫؍‬ Y, La have been synthesized in Ta containers at high temperature and their lattice parameters re5ned from Guinier X-ray powder di4raction data. The structure of this family has been detailed in space group P6 2m (Z ‫؍‬ 1) by single-crystal X-ray di4raction data for the case of Dy 6 FeTe 2 (a ‫؍‬ 8.236(3) A > , c ‫؍‬ 4.0107(2) A > , 233C, R(F)/R w ‫؍‬ 3.6/3.8%). The overall structure is of the Zr 6 CoAl 2 type, an ordered derivative of the Fe 2 P type. Extended HuK ckel calculations help to interpret the stabilization of this structure by iron or electron-richer elements. Strong Dy+Fe interactions in more 1D chains are a noteworthy feature.