Using different experimental techniques we analyze the interplay between the structure and the magnetomechanical behavior of soft nanogranular CoFeAlO films with thickness ranging from 125 to 550 nm. The sputtered film is characterized by 40-nm FeCo grains and a saturation magnetization of 16 kG. The results show that, due to the role of the mechanically stiff and insulating Al–O matrix, an increase of the resistivity leads to an increase of the anisotropy field and also of the ferromagnetic resonance frequency. The 125-nm-thick films possess the best combination of anisotropy field and resistivity leading to an estimated ferromagnetic resonance frequency around 1.9GHz
Magneto-mechanical properties of nanogranular Co-Fe-Al-O films / Pasquale, Massimo; Sasso, CARLO PAOLO; Magni, Alessandro; Celegato, F.; Sohn, J. C.; Lim, S. H.. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - 97:(2005), p. 10N306. [10.1063/1.1859213]
Magneto-mechanical properties of nanogranular Co-Fe-Al-O films
PASQUALE, MASSIMO;SASSO, CARLO PAOLO;MAGNI, ALESSANDRO;F. CELEGATO;
2005
Abstract
Using different experimental techniques we analyze the interplay between the structure and the magnetomechanical behavior of soft nanogranular CoFeAlO films with thickness ranging from 125 to 550 nm. The sputtered film is characterized by 40-nm FeCo grains and a saturation magnetization of 16 kG. The results show that, due to the role of the mechanically stiff and insulating Al–O matrix, an increase of the resistivity leads to an increase of the anisotropy field and also of the ferromagnetic resonance frequency. The 125-nm-thick films possess the best combination of anisotropy field and resistivity leading to an estimated ferromagnetic resonance frequency around 1.9GHzI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
