TY - JOUR
T1 - The magnetization of epitaxial nanometric CoFe2O4 (001) layers
AU - Rigato, F.
AU - Geshev, J.
AU - Skumryev, V.
AU - Fontcuberta, J.
PY - 2009/12/28
Y1 - 2009/12/28
N2 - We have studied the magnetic anisotropy of nanometric CoFe 2O4 (CFO) thin films grown on (100) SrTiO3 (STO) substrates. It has been found that epitaxial substrate-induced compressive strain makes the normal-to-film axis harder than the in-plane directions. In agreement with some previous reports, the magnetization loops are found to display a characteristic shrinking at low fields. Detailed structural and microstructural analyses, together with a modeling of the magnetization loops, revealed that the microstructure of the films, namely, the coexistence of a continuous CFO and a distribution of pyramidal CFO huts emerging from the surface, are responsible for this peculiar feature. We argue that this behavior, which significantly impacts the magnetic properties, could be a general trend of spinel films grow on (001)STO substrates. © 2009 American Institute of Physics.
AB - We have studied the magnetic anisotropy of nanometric CoFe 2O4 (CFO) thin films grown on (100) SrTiO3 (STO) substrates. It has been found that epitaxial substrate-induced compressive strain makes the normal-to-film axis harder than the in-plane directions. In agreement with some previous reports, the magnetization loops are found to display a characteristic shrinking at low fields. Detailed structural and microstructural analyses, together with a modeling of the magnetization loops, revealed that the microstructure of the films, namely, the coexistence of a continuous CFO and a distribution of pyramidal CFO huts emerging from the surface, are responsible for this peculiar feature. We argue that this behavior, which significantly impacts the magnetic properties, could be a general trend of spinel films grow on (001)STO substrates. © 2009 American Institute of Physics.
U2 - https://doi.org/10.1063/1.3267873
DO - https://doi.org/10.1063/1.3267873
M3 - Article
VL - 106
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
M1 - 113924
ER -