Conference Presentation

DESY-2013-00288

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Identification of the Curie point in FINEMET based alloys using in-situ X-ray diffraction

Michalik, S. (Corresponding author)Extern*HAS-User, Extern*

2013

Abstract: The thermal expansion behaviour of Fe(73.5-x)MnxSi13.5Cu1Nb3B9 (x = 1, 3, 5, 7 and 9) amorphous ribbon samples below the crystallization temperature was investigated on the atomic scale using in-situ high-energy X-ray diffraction (HEXRD). The tracing the position of the first diffuse diffraction maximum was used to follow the thermal expansion behavior of the studied samples. It was observed that the thermal volume coefficient is able to reflect the ferromagnetic transition. The temperatures at which the expansion curves changes their slopes are in good accordance with Curie temperatures extracted from thermomagnetic measurements. In order to get more information about structural changes, the atomic pair distribution function were calculated. Our results suggest that in-situ HEXRD provide enough sensitivity to detect the transition from the ferromagnetic to the paramagnetic state in the case of FINEMET based alloys.

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Contributing Institute(s):

1. DOOR-User (DOOR)

Research Program(s):

1. DORIS Beamline BW5 (POF2-54G13) (POF2-54G13)
2. FS-Proposal: I-20110689 EC (I-20110689-EC) (I-20110689-EC)
3. CALIPSO - Coordinated Access to Lightsources to Promote Standards and Optimization (312284) (312284)

Experiment(s):

1. DORIS Beamline BW5 (DORIS III)

Appears in the scientific report 2013

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Database coverage:

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