Dynamic character of the primitive to body-centered phase transition in anorthite

Frey, Friedrich; Jagodzinski, H.; Prandl, W. und Yelon, W. B. (1977): Dynamic character of the primitive to body-centered phase transition in anorthite. In: Physics and Chemistry of Minerals, Vol. 1, No. 2: pp. 227-231

Abstract

We show from elastic neutron diffraction data that anorthite CaAl2Si2O8 (An100) undergoes a primitive to body-centered phase transition at Tc=237±1°C. The transition is reversible, and Tc is well defined. Our measurements demonstrate that the I-lattice at the high temperature phase applies to all structural elements; in other words, the time-averaged lattice is exactly body-centered and not just in the space average of An100, as concluded earlier by other authors.

• 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