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Free keywords:
crystal structure, iron, superstructure, tellurium, δ′ phase
Abstract:
The phase Fe1-xTe (x=0.38) was obtained by short-distance chemical transport. The compound adopts a NiAs-like crystal structure, which exhibits intricate defect ordering. The substructure is described in a small unit cell (space group P (Formula presented.) m1, a=3.7892(1) Å, c=5.6896(2) Å, Z=2) with iron deficiency in every second layer along [001]. Single crystal diffraction data evidence a 2a×2a×2c unit cell. This atomic arrangement is described by means of a 3D superstructure and by a 3+1D model using a modulated 2a×2a×c supercell, respectively. © 2021 The Authors. Zeitschrift für anorganische und allgemeine Chemie published by Wiley-VCH GmbH
