Broadband ferromagnetic resonance in Ni-Mn-Ga single crystal

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00637337" target="_blank" >RIV/68378271:_____/25:00637337 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.jmmm.2025.173330" target="_blank" >https://doi.org/10.1016/j.jmmm.2025.173330</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jmmm.2025.173330" target="_blank" >10.1016/j.jmmm.2025.173330</a>

Result language
angličtina
Original language name
Broadband ferromagnetic resonance in Ni-Mn-Ga single crystal
Original language description
We present a broadband ferromagnetic resonance study in single crystalline Ni50Mn28.1Ga21.9 in the temperature range from room temperature to 120 °C in which the transformation from martensite to austenite phase takes place. Our measurements demonstrate that a large change (an order of magnitude) in the magnetocrystalline anisotropy at the martensitic phase transformation results in a sharp change of the resonance magnetic field. In a single variant martensite phase, the resonance fields satisfy the Kittel’s resonance condition for a thin film with the gyromagnetic factor g = 2.0. With the magnetic field parallel to the easy c-axis of the single variant martensite, the resonance is observed only for frequencies larger than 22 GHz. For the multivariant martensite case, the magnetic coupling between the twin variants can be taken into account for the satisfactory Kittel’s fit. We observe a weak magnetocrystalline anisotropy in the austenite phase, just above the reverse martensite transformation, comparable to the previous reports based on different magnetic measurements.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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