Crystal Structure of β-CuBrTe

Abstract

The crystal structure of β-CuBrTe at room temperature has been analyzed by the Rietveld method with X-ray powder diffraction data. It belongs to the orthorhombic system √2a×√2b× 3c (a ≈ b) with the space group Fddd, where the crystal system of the α-phase is assumed as a× a× c. The α-phase of CuBrTe at high temperature has the disordered arrangement of Cu atoms, but the structure of β-CuBrTe includes the ordered arrangement.