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Statements

Subject Item
n2:RIV%2F68378271%3A_____%2F10%3A00341803%21RIV11-AV0-68378271
rdf:type
n17:Vysledek skos:Concept
dcterms:description
The role of magnetoelastic coupling in the mechanism of magnetically induced reorientation or redistribution (MIR) of twin variants is still a matter of some controversy. To evaluate this role ordinary magnetostriction of different Ni-Mn-Ga single crystals transforming to 5M (exhibiting MIR) and NM (no MIR) martensite were measured. The magnetostriction of Ni-Mn-Ga austenite is relatively low and steeply increases when approaching to martensite transformation. This is correlated to the softening of elastic modulus. Observed high field contribution of opposite sign may be due to the dependence of higher order elastic constant on magnetic field. The magnetostriction of martensite is difficult to determine as it is masked by much stronger MIR effect and indirect method must be used. The results are discussed in the frame of magnetoelastic model for MIR and compared with magnetic energy model. The role of magnetoelastic coupling in the mechanism of magnetically induced reorientation or redistribution (MIR) of twin variants is still a matter of some controversy. To evaluate this role ordinary magnetostriction of different Ni-Mn-Ga single crystals transforming to 5M (exhibiting MIR) and NM (no MIR) martensite were measured. The magnetostriction of Ni-Mn-Ga austenite is relatively low and steeply increases when approaching to martensite transformation. This is correlated to the softening of elastic modulus. Observed high field contribution of opposite sign may be due to the dependence of higher order elastic constant on magnetic field. The magnetostriction of martensite is difficult to determine as it is masked by much stronger MIR effect and indirect method must be used. The results are discussed in the frame of magnetoelastic model for MIR and compared with magnetic energy model.
dcterms:title
Magnetoelastic coupling in Ni-Mn-Ga magnetic shape memory alloy Magnetoelastic coupling in Ni-Mn-Ga magnetic shape memory alloy
skos:prefLabel
Magnetoelastic coupling in Ni-Mn-Ga magnetic shape memory alloy Magnetoelastic coupling in Ni-Mn-Ga magnetic shape memory alloy
skos:notation
RIV/68378271:_____/10:00341803!RIV11-AV0-68378271
n5:aktivita
n6:P n6:Z
n5:aktivity
P(IAA200100627), Z(AV0Z10100520)
n5:cisloPeriodika
12
n5:dodaniDat
n12:2011
n5:domaciTvurceVysledku
n14:9669450
n5:druhVysledku
n8:J
n5:duvernostUdaju
n18:S
n5:entitaPredkladatele
n9:predkladatel
n5:idSjednocenehoVysledku
269227
n5:idVysledku
RIV/68378271:_____/10:00341803
n5:jazykVysledku
n7:eng
n5:klicovaSlova
magnetically induced reorientation (MIR); magnetic shape memory effect; ordinary magnetostriction; magnetoelastic coupling; Ni-Mn-Ga
n5:klicoveSlovo
n10:Ni-Mn-Ga n10:magnetically%20induced%20reorientation%20%28MIR%29 n10:magnetoelastic%20coupling n10:ordinary%20magnetostriction n10:magnetic%20shape%20memory%20effect
n5:kodStatuVydavatele
CH - Švýcarská konfederace
n5:kontrolniKodProRIV
[1FAC14556178]
n5:nazevZdroje
Materials Science Forum
n5:obor
n15:BM
n5:pocetDomacichTvurcuVysledku
1
n5:pocetTvurcuVysledku
1
n5:projekt
n16:IAA200100627
n5:rokUplatneniVysledku
n12:2010
n5:svazekPeriodika
635
n5:tvurceVysledku
Heczko, Oleg
n5:zamer
n13:AV0Z10100520
s:issn
0255-5476
s:numberOfPages
6