کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5457638 | 1515826 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Crystal structure and physical properties of UMo3B7
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A novel ternary compound, UMo3B7, has been synthesized by arc melting and annealing at 900 °C. Its crystal structure was determined from X-ray single crystal diffraction data (YMo3B7-type structure, space group Pnma; a = 1.10310(8) nm, b = 0.30995(2) nm, c = 1.2792(1) nm, RF2 = 0.0205). The structure is composed of boron filled trigonal prisms as well as unfilled tetrahedra and tetragonal pyramids formed by metal atoms. With respect to boron atoms aggregation, it exhibits a well-developed two-dimensional boron network revealing infinite bands of edge linked boron hexagons. The relationship with the members of the structural series within the V-B system: VnBn+1 = (n-1)VB (CrB-type) + VB2 (AlB2-type) (n = 1, 2, 3, 5) is discussed. Specific heat, magnetic susceptibility and electrical resistivity measurements characterize UMo3B7 as a spin fluctuating system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 85, June 2017, Pages 180-186
Journal: Intermetallics - Volume 85, June 2017, Pages 180-186
نویسندگان
L. Salamakha, O. Sologub, C. Rizzoli, H. Michor, A.P. GonÒ«alves, P. Rogl, E. Bauer,