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Original scientific paper

The Influence of Thermal Treatment on Magnetic Moments in i-Al-Pd-Mn Quasicrystals

Marko Jagodič ; Institute of Mathematics, Physics and Mechanics, Jadranska 19, SI-1000 Ljubljana, Slovenia
Zvonko Jagličić ; Institute of Mathematics, Physics and Mechanics, Jadranska 19, SI-1000 Ljubljana, Slovenia; Faculty of Civil and Geodetic Engineering, University of Ljubljana, Jamova 2, SI-1000 Ljubljana, Slovenia
Benjamin Grushko ; Institut für Festkörperforschung, Forschungszentrum Jülich, D-52425 Jülich, Germany
Janez Dolinšek ; Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia


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Abstract

The influence of cooling rate on thermal strains in the quasicrystalline icosahedral Al-Pd-Mn complex metallic alloy was investigated. In general, measurements of the electronic magnetization can be used as an indirect method for determining the short-scale disorder in the crystal structure as the magnetic moments at the Mn sites are highly dependent on their local environment. Excluding the contributions of thermal vacancies and second phase precipitates by proper selection of preannealing temperatures and durations, the changes in magnetization can be ascribed to the appearance or disappearance of thermal strains in the crystal structure. It was found that water-quenching increases thermal strains
irrespective of previous thermal history.

Keywords

complex metallic alloys, quasicrystals, thermal annealing, structural order, thermal strains, magnetic properties

Hrčak ID:

52154

URI

https://hrcak.srce.hr/52154

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