Antiferromagnetic coupling between martensitic twin variants observed by magnetic resonance in Ni-Mn-Sn-Co films

Golub, Vladimir; L’vov, Victor S.; Aseguinolaza, I. R.; Salyuk, O.; Popadiuk, D.; Kharlan, Y.; Kakazei, G. N.; Araújo, João P.; Barandiarán, J.M.; Chernenko, V.A.

doi:10.1103/physrevb.95.024422

Cited by 19 publications

(10 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1) hinting for a strong dependence of the magnetic properties of the alloy on the micro-and nanostructure of the martensite. Besides, ferromagnetic resonance, FMR, in twinned martensitic films of Ni-Mn-Sn-Co points to the antiferromagnetic coupling between the twins [30]. Finally, the transformation properties of Ni-Mn-In [31] and magnetocaloric effect in Ni-Mn-Sn [4,44] were satisfactorily described using a macroscopic model of magnetic solid with two magnetic sublattices:…”

Section: Influence Of Pressure On the Curie Temperatures Of Austenite...mentioning

confidence: 88%

“…Under no pressure, M(T) shows the following sequence of phase transitions on cooling: (i) ferromagnetic ordering from the paramagnetic austenite, PMA, to a FMA phase at the Curie temperature, T CA ≈ 310 K; (ii) in the temperature range 240 K 260 K T < < the alloy transforms from FMA to the orthorhombic weak magnetic martensite, which can be tentatively considered as a weak antiferromagnetically ordered phase, AFMM, formed as a result of competing ferroantiferro magnetic interactions (see Refs. [28][29][30]). The FMA→AFMM phase transformation is characterised by the abrupt decrease of the magnetisation, practically to zero.…”

Section: Influence Of Pressure On the Structural And Magnetic Transit...mentioning

confidence: 99%

See 1 more Smart Citation

Combined effect of magnetic field and hydrostatic pressure on the phase transitions exhibited by Ni-Mn-In metamagnetic shape memory alloy

et al. 2020

View full text Add to dashboard Cite

Section: Influence Of Pressure On the Curie Temperatures Of Austenite...mentioning

confidence: 88%

Section: Influence Of Pressure On the Structural And Magnetic Transit...mentioning

confidence: 99%

Combined effect of magnetic field and hydrostatic pressure on the phase transitions exhibited by Ni-Mn-In metamagnetic shape memory alloy

et al. 2020

View full text Add to dashboard Cite

“…magnetic shape memory alloy [29]. Interestingly, a recent experiment reported the observations of magnetic antiskyrmions in the tetragonal Heusler materials above room temperature [30].…”

mentioning

confidence: 99%

Twisted skyrmions at domain boundaries and the method of image skyrmions

Yang

Wang

et al. 2018

Phys. Rev. B

View full text Add to dashboard Cite

We predict a novel twisted skyrmion structure at the boundary of two antiferromagnetically coupled magnetic domains with antiparallel magnetization directions. Through this intermediate state, skyrmions with opposite polarities can be freely switched between each other by spin-polarized electric currents. Based on these findings, we propose the concept of double-track skyrmion racetrack memory and logic gates where the binary data are represented by skyrmions with different polarities. The dynamics of skyrmion polarity reversal is theoretically studied. Using the method of image, we derive the analytical formula of the repulsive potential when a normal skyrmion approaches the domain boundary. A harmonic attractive potential well is obtained for the twisted skyrmion across the boundary. Micromagnetic simulations compare well with theoretical predictions. The method of image skyrmion proposed in this work can be used to deal with a large class of skyrmion-boundary interaction problems.

show abstract

“…A similar effect is also expected for metamagnetic shape memory alloys with fine twin structures exhibiting ferromagnetic exchange inside the twin variants and antiferromagnetic exchange across twin boundaries, as recently reported in ref. 23 . A remarkable applied aspect of the studied magnetoresistance effect is the possibility of generating spin waves with defined frequencies by electric current pulses on periodic nanotwin structures formed in the MSM epitaxial films.…”

Section: Discussionmentioning

confidence: 99%

Negative Magnetoresistance in Nanotwinned NiMnGa Epitaxial Films

Golub

Chernenko

Apolinário

et al. 2018

Sci Rep

Self Cite

View full text Add to dashboard Cite

Magnetic shape memory alloys are under intensive investigation due to their unusual physical properties, such as magnetic shape memory effect, magnetic field induced superelasticity, direct and inverse magnetocaloric effect etc., promising for novel applications. One of the intriguing properties of these materials in a single phase state is a giant magnetoresistance. Here we report the remarkable results about the magnetoresistive properties of epitaxial films of Ni52.3Mn26.8Ga20.9 magnetic shape memory alloy in the temperature range of 100–370 K, well below the martensitic transformation temperature. It was found that the formation of non-collinear magnetic structure due to a nanotwinning of the film results in electron scattering on such a structure and noticeable negative magnetoresistance in the entire investigated temperature range.

show abstract

Antiferromagnetic coupling between martensitic twin variants observed by magnetic resonance in Ni-Mn-Sn-Co films

Cited by 19 publications

References 26 publications

Combined effect of magnetic field and hydrostatic pressure on the phase transitions exhibited by Ni-Mn-In metamagnetic shape memory alloy

Combined effect of magnetic field and hydrostatic pressure on the phase transitions exhibited by Ni-Mn-In metamagnetic shape memory alloy

Twisted skyrmions at domain boundaries and the method of image skyrmions

Negative Magnetoresistance in Nanotwinned NiMnGa Epitaxial Films

Contact Info

Product

Resources

About