Journal Article

PUBDB-2021-00290

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Magnetic dilution by severe plastic deformation

Stückler, M. (Corresponding author)Extern* ; Weissitsch, L.Extern* ; Wurster, S.Extern* ; Felfer, P. ; Krenn, H. ; Pippan, R.Extern* ; Bachmaier, A.Extern*

2020
American Inst. of Physics New York, NY

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Please use a persistent id in citations: doi:10.1063/1.5128058  doi:10.3204/PUBDB-2021-00290

Abstract: Mixtures of Fe and Cu powders are cold-compacted and subsequently deformed with severe plastic deformation by high-pressure torsion, leading to bulk samples. The dilution of Fe in the Cu matrix is investigated with SQUID-magnetometry, whereas the magnetic properties change as a function of Fe-content from a frustrated regime to a thermal activated behaviour. The magnetic properties are correlated with the microstructure, investigated by synchrotron X-ray diffraction and atom probe tomography. Annealing of the as-deformed states leads to demixing and grain growth, with the coercivity as a function of annealing temperature obeying the random anisotropy model. The presented results show that high-pressure torsion is a technique capable to affect the microstructure even on atomic length scales.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (POF3-622) (POF3-622)

Experiment(s):

1. PETRA Beamline P07 (PETRA III)

Appears in the scientific report 2020

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