Ferromagnetic resonance in Ni-Mn-Ga thin films and thin-film tubes

Autor:	Janusz Dubowik, Y. V. Kudryavtsev, I. Gościańska
Rok vydání:	2008
Předmět:	Austenite Magnetization Materials science Condensed matter physics Diffusionless transformation Phase (matter) Martensite General Physics and Astronomy General Materials Science Magnetostriction Physical and Theoretical Chemistry Thin film Ferromagnetic resonance
Zdroj:	The European Physical Journal Special Topics. 158:113-118
ISSN:	1951-6401 1951-6355
Popis:	We report on FMR experiments performed for the first time on thin Ni-Mn-Ga films clamped to the mica substrates and then fully released from them. The aim is to evaluate the role of magnetoelastic coupling in stressed Ni-Mn-Ga Heusler alloy films that undergo martensitic transformation. The experimental results show that the difference in the effective magnetization 4π(M tubes eff - M films eff ) is negligible in the austenite phase and it increases to about 1-1.5 kG at temperatures well below the martensitic transformation. The data suggests that magnetoelastic coupling in the martensite phase of Ni-Mn-Ga thin films is typical of normal thin magnetic films with magnetostriction of about 50 ppm.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::51845fe78498c215cbb52f934556f1a9 https://doi.org/10.1140/epjst/e2008-00662-6 Zobrazit plný text záznamu Full text from SpringerLink