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Large Non-ergodic Magnetoelastic Damping in Ni-Mn-Ga Austenite
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SYSNO ASEP 0535846 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Large Non-ergodic Magnetoelastic Damping in Ni-Mn-Ga Austenite Author(s) Bodnárová, Lucie (UT-L) RID, ORCID
Sedlák, Petr (UT-L) RID, ORCID
Heczko, Oleg (FZU-D) RID, ORCID
Seiner, Hanuš (UT-L) RID, ORCIDNumber of authors 4 Source Title Shape Memory and Superelasticity - ISSN 2199-384X
Roč. 6, č. 1 (2020), s. 89-96Number of pages 7 s. Publication form Print - P Language eng - English Country DE - Germany Keywords ferroelasticity ; martensite ; NiMnGa ; premartensite transformation ; elastic damping Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) Subject RIV - cooperation Institute of Physics - Solid Matter Physics ; Magnetism R&D Projects GA17-00062S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UT-L - RVO:61388998 ; FZU-D - RVO:68378271 UT WOS 000520068000001 EID SCOPUS 85079459455 DOI 10.1007/s40830-020-00272-4 Annotation Resonant ultrasound spectroscopy was used to analyze magnetoelastic damping in Ni-Mn-Ga single crystals in austenite and premartensite phases. Crystals with different treatment were studied, exhibiting different density of antiphase boundaries (APBs), as confirmed by magnetic force microscopy, and different magnetic behavior. For a quenched single crystal with high density of APBs, extremely strong damping was observed in a broad temperature range in the austenite phase. It was shown that this damping is history-dependent, i.e., non-ergodic, appearing only during heating runs preceded by a premartensite-austenite transition. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2021 Electronic address https://link.springer.com/article/10.1007/s40830-020-00272-4
Number of the records: 1