In:
Zeitschrift für Naturforschung B, Walter de Gruyter GmbH, Vol. 71, No. 5 ( 2016-5-1), p. 553-566
Abstract:
The new equiatomic scandium transition metal aluminides Sc T Al for T = Cr, Ru, Ag, Re, Pt, and Au were obtained by arc-melting of the elements followed by subsequent annealing for crystal growth. The samples were studied by powder and single crystal X-ray diffraction. The structures of three compounds were refined from single crystal X-ray diffractometer data: ScCrAl, MgZn 2 type, P 6 3 / mmc , a = 525.77(3), c = 858.68(5) pm, R 1 = 0.0188, wR 2 = 0.0485, 204 F 2 values, 13 variables, ScPtAl, TiNiSi type, Pnma , a = 642.83(4), b = 428.96(2), c = 754.54(5) pm, R 1 = 0.0326, wR 2 = 0.0458, 448 F 2 values, 20 variables and ScAuAl, HfRhSn type, P 6̅2 c , a = 722.88(4), c = 724.15(4) pm, R 1 = 0.0316, wR 2 = 0.0653, 512 F 2 values, 18 variables. Phase pure samples of all compounds were furthermore investigated by magnetic susceptibility measurements, and Pauli-paramagnetism but no superconductivity was observed down to 2.1 K for all of them. The local structural features and disordering phenomena have been characterized by 27 Al and 45 Sc magic angle spinning (MAS) and static NMR spectroscopic investigations.
Type of Medium:
Online Resource
ISSN:
1865-7117
,
0932-0776
DOI:
10.1515/znb-2016-0044
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
2016
detail.hit.zdb_id:
2078109-X
detail.hit.zdb_id:
124635-5
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