Röntgenographische und schwingungsspektroskopische Untersuchung der Mischkristallreihen Cu3MxM′;1-xX4 (M,M′ = V,Nb, Ta; X = S,Se) mit Sulvanitstruktur |
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Authors: | E. Riedel,K. Erekul,W. Paterno,S. Yü ksel |
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Abstract: | X-ray and Vibrational Spectroscopical Investigation of the Mixed Crystal Series Cu3MxM′1-xX4 (M, M′ = V, Nb, Ta; X = S, Se) with Sulvanite Structure Solid solutions Cu3MxM′1-xX4 (M, M′ = V, Nb, Ta; X = S, Se) with Sulvanite structure have been prepared in the range 0 ≤ x ≤ 1 by solid state reaction between 600°C and 900°C. The lattice constants decrease linearly with x. The UR active antisymmetrical as well as the Raman active symmetrical M–X stretching vibrations may be attached to independently vibrating MX4 and M′X4 tetrahedrons. |
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