CEMS Study of the Interface Formation in the Fe-Si System during Pulsed Laser Deposition

Zenkevitch, A.; Fanciulli, M.; Weyer, G.; Khabelashvili, I. D.

doi:10.1002/1521-3951(200011)222:1<279::aid-pssb279>3.0.co;2-6

Cited by 2 publications

(1 citation statement)

References 31 publications

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“…[7,10] The nature of the DIST component seems not to be very much affected by the Sb 2 Te 3 preparation (Figure 3 and Table 3). It is well known that Fe and Si have a certain reactivity even at RT, and paramagnetic doublets arise in the CEMS spectra [19,20] Indeed, FeSi and FeAu components may have a similar quadrupole splitting around 0.7 mm s −1 as we detect. [18,20] Being the observed isomer shift of 0.4 mm s −1 (Table 3) very close to that expected at the Au/Fe interface, [18] we tend to attribute DOUB-1 mostly to the top Au/Fe interface, even if a partial contribution to the spectral intensity from FeSi cannot be ruled out.…”

Section: Magnetotransport In Extended Sb 2 Te 3 On Si(111)supporting

confidence: 74%

Spin‐Charge Conversion in Fe/Au/Sb₂Te₃ Heterostructures as Probed By Spin Pumping Ferromagnetic Resonance

Longo

Locatelli

Belli

et al. 2021

Adv Materials Inter

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Large‐area antimony telluride (Sb2Te3) thin films are grown by a metal organic chemical vapor deposition technique on 4” Si(111) substrates, and their topological character probed by magnetoconductance measurements. When interfaced with Fe thin films, broadband ferromagnetic resonance spectroscopy (BFMR) shows a clear increase of the damping parameter in Fe/Sb2Te3 when compared to a reference Fe layer, which may suggest the occurrence of spin pumping (SP) into Sb2Te3. Simultaneously, X‐ray reflectivity and conversion electron Mossbauer spectroscopy evidence the development of a chemically and magnetically pure Fe/Sb2Te3 interface. However, by conducting SP‐FMR, it is shown that no spin‐to‐charge conversion (S2C) occurs in Fe/Sb2Te3, while a clear SP signal develops by introducing a 5 nm Au interlayer between Fe and Sb2Te3, with a measured inverse Edelstein effect conversion efficiency of λIEE = 0.27 nm. The results shed some light on the correlation among the chemical‐structural‐magnetic properties of the Fe/Sb2Te3 interface, the broadening of the magnetic damping parameter as detected by BFMR, and the occurrence of S2C, as probed by SP‐FMR.

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Section: Magnetotransport In Extended Sb 2 Te 3 On Si(111)supporting

confidence: 74%

Spin‐Charge Conversion in Fe/Au/Sb₂Te₃ Heterostructures as Probed By Spin Pumping Ferromagnetic Resonance

Longo

Locatelli

Belli

et al. 2021

Adv Materials Inter

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Structural and Magnetic Properties of Helicon-Sputtered Fe/Si Multilayers

Sakamoto

Honda

Shen

et al. 2002

phys. stat. sol. (a)

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In Fe/Si multilayers (MLs) prepared by helicon plasma sputtering, we have investigated the structural and magnetic properties as a function of Fe and Si layer thickness systematically. In [Fe 2 nm/ Si 1 nm] 30 and [Fe 3 nm/Si 1 nm] 20 MLs, large lateral Fe grains grow suggesting small atomic intermixing of Fe and Si, and antiferromagnetic coupling between Fe layers occurs, causing a magnetoresistance of about 0.1%. With decreasing the Fe layer thickness and increasing the Si layer thickness, X-ray diffraction patterns indicate peak broadening due to atomic intermixing between Fe and Si layers, and the magnetization curves indicate the change from antiferromagnetic to ferromagnetic coupling between Fe. Furthermore, in this case, the conversion electron Mö ssbauer spectra show that the hyperfine field decreases due to the solution of Si atoms in the bulk Fe phase. Doublet peaks appear because of the formation of iron silicides which cause the degradation of antiferromagnetic coupling. Introduction In transition-metal/Si multilayers (TM/SiMLs), structural and magnetic properties depend on the layer thickness and change due to the atomic intermixing of TM and Si; the magnetic coupling between Fe layers depends on the Si spacer-layer thickness [1] or on the crystallinity of the iron and iron silicide layers [2]. Tong et al. have suggested that the mechanisms of the antiferromagnetic coupling and the magnetoresistance (MR) effect in Fe/Si MLs are similar to that of metal/metal systems [3]. Strijkers et al. have observed the formation of a nonmagnetic metallic metastable iron silicide with a CsCl structure, which mediates the antiferromagnetic coupling in Fe/Si MLs [4].In this study, we investigate the structural and magnetic properties of helicon-sputtered Fe/Si MLs by X-ray diffraction (XRD), magnetization (VSM), conversion electron Mö ssbauer spectroscopy (CEMS) and resistivity measurements to clarify a relation between magnetic coupling of Fe layers and structure properties.

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CEMS Study of the Interface Formation in the Fe-Si System during Pulsed Laser Deposition

Cited by 2 publications

References 31 publications

Spin‐Charge Conversion in Fe/Au/Sb₂Te₃ Heterostructures as Probed By Spin Pumping Ferromagnetic Resonance

Spin‐Charge Conversion in Fe/Au/Sb₂Te₃ Heterostructures as Probed By Spin Pumping Ferromagnetic Resonance

Structural and Magnetic Properties of Helicon-Sputtered Fe/Si Multilayers

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CEMS Study of the Interface Formation in the Fe-Si System during Pulsed Laser Deposition

Cited by 2 publications

References 31 publications

Spin‐Charge Conversion in Fe/Au/Sb2Te3 Heterostructures as Probed By Spin Pumping Ferromagnetic Resonance

Spin‐Charge Conversion in Fe/Au/Sb2Te3 Heterostructures as Probed By Spin Pumping Ferromagnetic Resonance

Structural and Magnetic Properties of Helicon-Sputtered Fe/Si Multilayers

Contact Info

Product

Resources

About

Spin‐Charge Conversion in Fe/Au/Sb₂Te₃ Heterostructures as Probed By Spin Pumping Ferromagnetic Resonance

Spin‐Charge Conversion in Fe/Au/Sb₂Te₃ Heterostructures as Probed By Spin Pumping Ferromagnetic Resonance