Abstract

The η-phase field of the CuIn phase diagram has been investigated by means of electron and X-ray diffraction. This phase field contains three distinct phase regions: A, B, and C. All phases are based on the B8-type (NiAsNi 2In type) structure. The A-phase is a high-temperature monoclinic phase. It is converted to the B-phase, which can be seen by the continuous rotation of satellite reflections in the diffraction pattern. Hence the B-phase has many modifications. The different diffraction patterns of the B-phase link together the patterns of the A-phase and the C-phase. The C-phase is a low-temperature phase with a large orthorhombic supercell.

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