High-resolution EPMA X-ray images of mother liquid inclusions in a Pd2Ga single crystal

Müller, Dirk; Schwerin, J.; Gille, P. and Fehr, K. T. (2014): High-resolution EPMA X-ray images of mother liquid inclusions in a Pd2Ga single crystal. In: Emas 2013 Workshop: 13Th European Workshop On Modern Developments and Applications in Microbeam Analysis, Vol. 55, 012013

Abstract

During crystal growth from solution inclusions of different compositions were trapped at the rim of a Pd2Ga single crystal. Their fine-grained (< 5 mu m) internal structure demands special requirements for electron microprobe analysis, realized by low-voltage (5 keV) element mapping applying a step size of 0.138 mu m for each pixel. It can be shown, that these inclusions represent an isolated chemical system, and that crystallisation upon cooling follows the expected thermodynamic phase relations. Thus the final composition in the centre of the inclusion consists of a small-scale mixture of PdGa and Pd5Ga3 evolved out of a solid-solid decomposition of Pd5Ga4.

• Item Type: Journal article
• Faculties: Geosciences > Department of Earth and Environmental Sciences > Mineralogy, Petrology and Geochemistry
• Subjects: 500 Science > 550 Earth sciences and geology
• ISSN: 1757-8981
• Language: English