2000
DOI: 10.1088/0022-3727/33/12/304
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The effect of thermal treatment, composition and substrate on the texture and magnetic properties of FeCo thin films

Abstract: Magnetostrictive FeCo films (thickness 300 nm) have been produced by RF magnetron sputter deposition. The effects of the substrate, composition and thermal treatment on the structural and magnetic properties of the films have been determined. Structural analysis was performed using transmission electron microscopy and x-ray diffraction. The magnetic properties, including magnetostriction, were determined by the magneto-optical Kerr effect, magnetic force microscopy and strain-modulated ferromagnetic resonance.… Show more

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Cited by 40 publications
(21 citation statements)
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“…As a result, the H c decreases. On the other hand, this reduction in coercivity may be due to a reduction of the K 1 anisotropy constant [28]. Moreover, the low coercivity for Fe 24 Co 46 Ni 30 alloy nanoparticles attached on the surface of CNTs may be attributed to the low ratio of bcc(1 1 0)/fcc(1 1 1) [21] and high Ni content in this sample.…”
Section: Magnetic Measurementmentioning
confidence: 83%
“…As a result, the H c decreases. On the other hand, this reduction in coercivity may be due to a reduction of the K 1 anisotropy constant [28]. Moreover, the low coercivity for Fe 24 Co 46 Ni 30 alloy nanoparticles attached on the surface of CNTs may be attributed to the low ratio of bcc(1 1 0)/fcc(1 1 1) [21] and high Ni content in this sample.…”
Section: Magnetic Measurementmentioning
confidence: 83%
“…Table III shows the magnetic parameters used in our computations. In addition, we imposed that the PZT layer is t e ¼ 500 nm thick and has a piezoelectric coefficient of d 31 …”
Section: à5mentioning
confidence: 99%
“…However, in the case of an active piezo-substrate inflicting a longitudinal strain to the magnetic grains, we expect a change of the magnetic anisotropy field when V 3 6 ¼ 0. According to relation (2), the effective anisotropy field can be either increased or decreased depending on the constituent material parameters dictating the signs of k s and d 31 . The 6 in relation (2) indicates the fact that the polarity of the applied voltage can be positive or negative resulting in compressive or tensile stress with direct consequences on the effective magnetic anisotropy field (i.e., coercive field).…”
mentioning
confidence: 99%
“…The theory for the inverse method appears to be simpler because the shape of the substrate is controlled directly and one can consider only the thin film properties. Nevertheless, different expressions of the stress induced anisotropy can be found in different papers without a clear explanation of their origin 1,5,18,21 . The difficulties come from an interplay between longitudinal and transverse deformations in response to uniaxial stresses related by Poisson's ratio.…”
Section: Introductionmentioning
confidence: 99%