Magnetic properties of FeGa/Kapton for flexible electronics

Pradhan, Gajanan; Celegato, Federica; Barrera, Gabriele; Olivetti, E.; Coı̈sson, M.; Hajduček, Jan; Arregi, Jon Ander; Čelko, Ladislav; Uhlíř, Vojtěch; Rizzi, Paola; Tiberto, P.

doi:10.1038/s41598-022-21589-3

Cited by 10 publications

(4 citation statements)

References 59 publications

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“…In recent years, FeGa thin films have been studied in PMN-PT structures. FeGa alloys have a high magnetostriction constant, high tensile strength and soft magnetic behavior [42,43]. The manipulation of magnetic hysteresis under the application of electric field has been shown by Phuoc et al [44,45].…”

Section: Introductionmentioning

confidence: 94%

Electric field control of magnetization reversal in FeGa/PMN-PT thin films

Pradhan,

Celegato,

Magni

et al. 2024

J. Phys. Mater.

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Artificial magnetoelectric materials possess huge potential to be utilized in the development of energy efficient spintronic devices. In the past decade, the search for a good ferromagnetic/ferroelectric combination having the ability to create high magnetoelectric coupling, created new insights and also new challenges. In this report, the magnetoelectric effect is studied in the FeGa/PMN-PT(001) multiferroic heterostructures in presence of electric fields via the strain-mediated effects. A formation of magnetic anisotropy in FeGa is observed after changing the polarization of PMN-PT to out-of-plane orientations. The magnetic domains structures forming during the magnetization reversal were studied at compressive, tensile and remanent strained states. The change in the magnetic properties were reversible after each cycling of the electric field polarity, hence creating a non-volatile system. The control of magnetization switching sustained by an ON-OFF electric field makes our multiferroic heterostructure suitable for application in low-power magnetoelectric based memory applications.

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Section: Introductionmentioning

confidence: 94%

Electric field control of magnetization reversal in FeGa/PMN-PT thin films

Pradhan,

Celegato,

Magni

et al. 2024

J. Phys. Mater.

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“…The competition among magnetic anisotropies takes an important role in the magnetic commutation processes of films [32]. Studies about the possibility of controlling the direction and magnitude of the in-plane component of the magnetic anisotropy in Fe 1−x Ga x thin films by means of mechanical stress have been reported when using flexible substrates [33,34], and recently reports cover Fe 1−x Ga x layers on rigid ones [35]. However, a detailed study of the evolution of in-plane anisotropies under stress induced by substrates and heat treatment connected with the microstructural behavior has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Microstructural contribution to the magnetic anisotropy in Fe 1 − x <

Ramírez,

Moya Riffo,

Ambrosio

et al. 2024

J. Phys. D: Appl. Phys.

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In this study, we present a systematic analysis of the relation between the structural properties and magnetic anisotropies of as-grown and heat-treated polycrystalline Fe1−xGax (0.11 < x < 0.19) thin ﬁlms deposited on glass and Si(100) substrates. The results show that the crystallographic texture of the ﬁlms has a signiﬁcant impact on the evolution of the magnetic anisotropies. The samples grown on glass do not exhibit a preferred texture while, for samples grown on Si(100), the appearance of a weak in-plane fourfold magnetic anisotropy is reported. Such anisotropy is enhanced and better deﬁned in the heat treated samples. Via a phenomenological model we show that this anisotropy has a microstructural origin. These ﬁndings demonstrate the possibility of tuning magnetic anisotropies by growing on diﬀerent substrates and/or performing thermal treatments, which in turn reinforces the possibility of developing smart magnetic switching materials for electronic applications.

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“…In this research direction, highly efficient coupling between magnon and phonon can be also achieved by exploiting Fe-Ga thin layers [15]. Considering that a Fe-Ga layer will be applied to several kinds of electronic and spintronic devices, the magnetoelastic properties in the thin film form should be investigated in detail, which has been done not only for the Fe-Ga epitaxial thin films [15][16][17][18][19] but also for the Fe-Ga polycrystalline thin films [20,21]. Although in most studies the Fe-Ga layer was epitaxially grown on a ZnSe buffer layer or a GaAs substrate, it is worth doing the comprehensive study on magnetoelastic properties for the Fe-Ga thin films epitaxially grown on different substrates.…”

Section: Introductionmentioning

confidence: 99%

Magnetoelastic coupling for Fe–Ga thin films epitaxially grown on different substrates

Ding,

Ito,

Endo

et al. 2024

J. Phys. D: Appl. Phys.

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This paper reports the systematic study on the structure, magnetic properties and magnetoelastic properties for the Fe100−x Ga x (001) thin films epitaxially grown on the different substrates of GaAs(001) and MgO(001) using the sputtering technique. The alloy composition dependence of effective magnetoelastic coupling coefficient B eff along the FeGa [110] direction indicated that the largest magnetoelastic coupling was obtained for the Fe–Ga layer with x = 30 grown on the MgO substrate, which was evaluated to be B eff = − 9.4 × 107 erg cm−3. Considering the results of structural analysis and magnetization measurement, the different crystallite sizes depending on the kind of substrate may give rise to the different magnetoelastic coupling strengths between the Fe–Ga layers on the MgO and the GaAs. The magnetostriction along the Fe–Ga [111] direction λ 111 was also estimated with the assumption of plausible elastic property of Fe–Ga, and showed the values comparable to the reported value of bulk Fe–Ga. This means the large magnetostriction can be obtained even for the Fe–Ga thin films epitaxially grown not only on the GaAs(001) but also on the MgO(001). The findings in this work will give a guideline for designing spintronic applications with a Fe–Ga layer exhibiting a large magnetoelastic coupling.

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Magnetic properties of FeGa/Kapton for flexible electronics

Cited by 10 publications

References 59 publications

Electric field control of magnetization reversal in FeGa/PMN-PT thin films

Electric field control of magnetization reversal in FeGa/PMN-PT thin films

Microstructural contribution to the magnetic anisotropy in Fe 1 − x <

Magnetoelastic coupling for Fe–Ga thin films epitaxially grown on different substrates

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