The effect of the deposition temperature (Tdep) on the crystallographic orientation of pulsed laser-deposited FeCo/MgO(100) thin film was determined by means of X-ray reflectivity and high resolution trasmission electron microscopy analysis and was correlated with the magnetic anisotropy properties measured by angle dependent hysteresis loops. Highly textured films with a bcc structure and very smooth surface were obtained even at room temperature, the film being [100] and [110] oriented, at Tdep = 25 °C and 150 °C, respectively. The cubic symmetry is reflected in the angular dependence of remanent magnetization, showing a 4-fold character, whose in-plane distribution is consistent with the different crystallographic orientations of the films. The high structural quality, even at room temperature, is reflected in a high value of the saturation magnetization and low coercivity, matching the requirements for technological applications.

Highly Textured FeCo Thin Films Deposited by Low Temperature Pulsed Laser Deposition / Varvaro, Gaspare; Peddis, Davide; Barucca, Gianni; Mengucci, Paolo; Rodionova, Valeria; Chichay, Ksenia; Testa, Alberto Maria; Agostinelli, Elisabetta; Laureti, Sara. - In: ACS APPLIED MATERIALS & INTERFACES. - ISSN 1944-8244. - ELETTRONICO. - 7:40(2015), pp. 22341-22347. [10.1021/acsami.5b06030]

Highly Textured FeCo Thin Films Deposited by Low Temperature Pulsed Laser Deposition

BARUCCA, Gianni;MENGUCCI, Paolo;
2015-01-01

Abstract

The effect of the deposition temperature (Tdep) on the crystallographic orientation of pulsed laser-deposited FeCo/MgO(100) thin film was determined by means of X-ray reflectivity and high resolution trasmission electron microscopy analysis and was correlated with the magnetic anisotropy properties measured by angle dependent hysteresis loops. Highly textured films with a bcc structure and very smooth surface were obtained even at room temperature, the film being [100] and [110] oriented, at Tdep = 25 °C and 150 °C, respectively. The cubic symmetry is reflected in the angular dependence of remanent magnetization, showing a 4-fold character, whose in-plane distribution is consistent with the different crystallographic orientations of the films. The high structural quality, even at room temperature, is reflected in a high value of the saturation magnetization and low coercivity, matching the requirements for technological applications.
2015
cubic magnetocrystalline anisotropy, FeCo, ferromagnetic materials, growth orientation, pulsed laser deposition, thin films
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/230133
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