Disorder in decagonal quasicrystals

Frey, Friedrich and Weidner, Eveline (2003): Disorder in decagonal quasicrystals. In: Zeitschrift fur Kristallographie, Vol. 218, No. 2: pp. 160-169

Abstract

Complementary neutron and x-ray diffuse scattering may provide insight into structural super-ordering and disordering of decagonal quasicrystals (d-phases), and, in consequence, into the formation and stability of aperiodically ordered alloys. Neutron diffraction makes a contrasting almost isoelectronic atomic species possible, as well as a separation of elastic and inelastic diffuse intensity contributions. Experimental work at high temperatures is comparatively unproblematic. The method suffers, however, from the difficulty in obtaining sufficiently sized mono-grain samples and a lack of dedicated neutron diffraction instruments. Recent results, with a main focus on high-temperature (<1000 °C) investigations of disordered decagonal Al-Ni-Co phases are reported and some tentative models are discussed.

• Item Type: Journal article
• Faculties: Geosciences > Department of Earth and Environmental Sciences > Crystallography and Materials Science
• Subjects: 500 Science > 550 Earth sciences and geology
• Language: English