About: Anomalous lattice softening of Ni2MnGa austenite due to magnetoelastic coupling

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Elastic constants of the cubic Ni2MnGa austenite phase and corresponding mechanical damping were determined in the temperature range from 220K to 400K and magnetic field up to 2 T using ultrasound pulse-echo method and resonant ultrasound spectroscopy. The shear coefficient c0 increases from 3.6 GPa in the demagnetized state to 5.9 GPa at magnetic saturation, whereas the damping decreased nearly six times. The changes of other elastic constants, c11 and c44 with an applied field were less than 1%. In the ferromagnetic state, the c0 was proportional to the square of magnetization. Above the Curie point, the coefficient c0 and damping were field-independent. The anomalous shear softening is attributed to strong magnetoelastic coupling enhanced by low magnetic anisotropy. Elastic constants of the cubic Ni2MnGa austenite phase and corresponding mechanical damping were determined in the temperature range from 220K to 400K and magnetic field up to 2 T using ultrasound pulse-echo method and resonant ultrasound spectroscopy. The shear coefficient c0 increases from 3.6 GPa in the demagnetized state to 5.9 GPa at magnetic saturation, whereas the damping decreased nearly six times. The changes of other elastic constants, c11 and c44 with an applied field were less than 1%. In the ferromagnetic state, the c0 was proportional to the square of magnetization. Above the Curie point, the coefficient c0 and damping were field-independent. The anomalous shear softening is attributed to strong magnetoelastic coupling enhanced by low magnetic anisotropy. (en)
Title	Anomalous lattice softening of Ni2MnGa austenite due to magnetoelastic coupling Anomalous lattice softening of Ni2MnGa austenite due to magnetoelastic coupling (en)
skos:prefLabel	Anomalous lattice softening of Ni2MnGa austenite due to magnetoelastic coupling Anomalous lattice softening of Ni2MnGa austenite due to magnetoelastic coupling (en)
skos:notation	RIV/68378271:_____/12:00377217!RIV13-GA0-68378271
http://linked.open...avai/predkladatel	Fyzikální ústav AV ČR, v.v.i.
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA101/09/0702), P(GAP107/10/0824), P(GAP107/11/0391), Z(AV0Z10100520), Z(AV0Z20760514)
http://linked.open...iv/cisloPeriodika	7
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Kopeček, Jaromír Heczko, Oleg
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	122841
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/12:00377217
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Ni-Mn-Ga austenite; anomalous lattice softening; premartensitic transformation; magnetostriction; elastic constants of ferromagnetic austenite (en)
http://linked.open.../riv/klicoveSlovo	magnetostriction Ni-Mn-Ga austenite anomalous lattice softening elastic constants of ferromagnetic austenite premartensitic transformation
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[CA9A23ADEB19]
http://linked.open...i/riv/nazevZdroje	Journal of Applied Physics
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Mechanical properties of functional surface layers of submicron thicknesses Cobalt-based ferromagnetic shape memory alloys Heusler alloys exhibiting magnetic shape memory effect and related phenomena
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	111
http://linked.open...iv/tvurceVysledku	Landa, Michal Sedlák, Petr Seiner, Hanuš Kopeček, Jaromír Heczko, Oleg
http://linked.open...ain/vavai/riv/wos	000303282400133
http://linked.open...n/vavai/riv/zamer	Specific effects in condensed systems with reduced dimension and broken symmetry Complex dynamical systems in thermodynamics, fluid and solid mechanics
issn	0021-8979
number of pages	3 (xsd:int)
http://bibframe.org/vocab/doi	10.1063/1.3676412
is http://linked.open...avai/riv/vysledek of	Anomalous lattice softening of Ni2MnGa austenite due to magnetoelastic coupling

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