Advanced data analysis procedure for hard x-ray resonant magnetic reflectivity discussed for Pt thin film samples of various complexity

Krieft, Jan; Graulich, Dominik; Moskaltsova, Anastasiia; Bouchenoire, Laurence; Francoual, S.; Kuschel, Timo

doi:10.1088/1361-6463/ab8fdc

Cited by 16 publications

(13 citation statements)

References 64 publications

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“…One reason could be the poorer fit quality of the asymmetry ratio for the inverted YIG/Pt//YAG bilayer compared to metallic bilayers. Still, the fit result presented here reflects a clear overall global minimum as tested by goodnessof-fit space mappings which have proven effective in previous XRMR studies [89,90]. In addition, the origin of the oscillating background observed for the inverted YIG/Pt//YAG bilayer is unknown and has not been observed previously for metallic bilayers but could affect the quantitative XRMR results as well.…”

Section: X-ray Resonant Magnetic Reflectivitysupporting

confidence: 66%

Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y3Fe5O12 and inverted
Geprägs
¹
,
Klewe
²
,
Meyer
³

et al. 2020
Phys. Rev. B
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The magnetic state of heavy metal Pt thin films in proximity to the ferrimagnetic insulator Y 3 Fe 5 O 12 has been investigated systematically by means of x-ray magnetic circular dichroism and x-ray resonant magnetic reflectivity measurements combined with angle-dependent magnetotransport studies. To reveal intermixing effects as the possible cause for induced magnetic moments in Pt, we compare thin film heterostructures with different orders of the layer stacking and different interface properties. For standard Pt layers on Y 3 Fe 5 O 12 thin films, we do not detect any static magnetic polarization in Pt. These samples show an angle-dependent magnetoresistance behavior, which is consistent with the established spin Hall magnetoresistance. In contrast, for the inverted layer sequence, Y 3 Fe 5 O 12 thin films grown on Pt layers, Pt displays a finite induced magnetic moment comparable to that of all-metallic Pt/Fe bilayers. This magnetic moment is found to originate from finite intermixing at the Y 3 Fe 5 O 12 /Pt interface. As a consequence, we found a complex angle-dependent magnetoresistance indicating a superposition of the spin Hall and the anisotropic magnetoresistance in these types of samples. Both effects can be disentangled from each other due to their different angle dependence and their characteristic temperature evolution.

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Section: X-ray Resonant Magnetic Reflectivitysupporting

confidence: 66%

Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y3Fe5O12 and inverted
Geprägs
¹
,
Klewe
²
,
Meyer
³

et al. 2020
Phys. Rev. B
Self Cite
12
0
4
0
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“…Further information on the two measurement techniques, the experimental details, and the XRMR fitting procedure can be found in the Supplemental Material (including Refs. [32][33][34][35][36][37][38].…”

Section: And the Asymmetry Ratio DI ¼ Iþàiàmentioning

confidence: 99%

Quantitative comparison of the magnetic proximity effect in Pt detected by XRMR and XMCD

Graulich

Krieft

Moskaltsova

et al. 2021

Applied Physics Letters

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X-ray resonant magnetic reflectivity (XRMR) allows for the simultaneous measurement of structural, optical, and magneto-optic properties and depth profiles of a variety of thin film samples. However, a same-beamtime same-sample systematic quantitative comparison of the magnetic properties observed using XRMR and x-ray magnetic circular dichroism (XMCD) is still pending. Here, the XRMR results (Pt L 3 absorption edge) for the magnetic proximity effect in Pt deposited on the two different ferromagnetic materials Fe and Co 33 Fe 67 are compared with quantitatively analyzed XMCD results. The obtained results are in very good quantitative agreement between the absorptionbased (XMCD) and reflectivity-based (XRMR) techniques, taking into account an ab initio calculated magneto-optic conversion factor for the XRMR analysis. Thus, it is shown that XRMR provides quantitative reliable spin depth profiles important for spintronic and spin caloritronic transport phenomena at this type of magnetic interfaces.

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“…[30], and a conclusive recipe for fitting XRMR data can be found in Refs. [31][32][33]. shows their difference.…”

Section: Xrmrmentioning

confidence: 97%

Structural and magnetic investigation of the interfaces of $\mathrm{Fe_3O_4/MgO(001)}$ with and without NiO interlayer

Pohlmann,

Bertram,

Thien

et al. 2021

Preprint

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We present an investigation on the structural and magnetic properties of the interfaces of Fe3O4/MgO(001) and Fe3O4/NiO/MgO(001) by extracting cation-selective magnetooptical depth profiles by means of x-ray magnetic reflectivity (XRMR) in combination with charge-transfer multiplet simulations of x-ray magnetic circular dichroism (XMCD) data. For Fe3O4/MgO(001), the magnetooptical depth profiles at the Fe 2+ oct and the Fe 3+ oct resonant energies follow exactly the structural profile, while the magnetooptical depth profile at the Fe 3+ tet resonance is offset by 3.2 ± 1.3 Å from the interface, consistent with a B-site interface termination of Fe3O4 with fully intact magnetic order. In contrast, for Fe3O4/NiO(001), the magnetooptical depth profiles at the Fe 2+ oct and the Ni 2+ resonances agree with the structural profile, but the interface positions of the magnetooptical depth profiles at the Fe 3+ oct and the Fe 3+ tet resonances are laterally shifted by 3.3 ± 1.4 Å and 2.7 ± 0.9 Å, respectively, not consistent with a magnetically ordered stoichiometric interface. This may be related to an intermixed (Ni, Fe)O layer at the interface. The magnetooptical depth profiles at the Ni L3 edge reveal uncompensated magnetic moments throughout the NiO film.

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Advanced data analysis procedure for hard x-ray resonant magnetic reflectivity discussed for Pt thin film samples of various complexity

Abstract: X-ray resonant magnetic reflectivity (XRMR) is a powerful method to determine the optical, structural and magnetic depth profiles of a variety of thin film systems. Here, we investigate samples of different complexity all measured at the Pt L 3 … Show more

Cited by 16 publications

References 64 publications

Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y3Fe5O12 and inverted
Geprägs
¹
,
Klewe
²
,
Meyer
³

et al. 2020
Phys. Rev. B
Self Cite
12
0
4
0
View full text Add to dashboard Cite

Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y3Fe5O12 and inverted
Geprägs
¹
,
Klewe
²
,
Meyer
³

et al. 2020
Phys. Rev. B
Self Cite
12
0
4
0
View full text Add to dashboard Cite

Quantitative comparison of the magnetic proximity effect in Pt detected by XRMR and XMCD

Structural and magnetic investigation of the interfaces of $\mathrm{Fe_3O_4/MgO(001)}$ with and without NiO interlayer

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Advanced data analysis procedure for hard x-ray resonant magnetic reflectivity discussed for Pt thin film samples of various complexity

Abstract: X-ray resonant magnetic reflectivity (XRMR) is a powerful method to determine the optical, structural and magnetic depth profiles of a variety of thin film systems. Here, we investigate samples of different complexity all measured at the Pt L 3 … Show more

Cited by 16 publications

References 64 publications

Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y3Fe5O12 and inverted Geprägs1, Klewe2, Meyer3 et al. 2020Phys. Rev. BSelf Cite12040View full textAdd to dashboardCite

Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y3Fe5O12 and inverted Geprägs1, Klewe2, Meyer3 et al. 2020Phys. Rev. BSelf Cite12040View full textAdd to dashboardCite

Quantitative comparison of the magnetic proximity effect in Pt detected by XRMR and XMCD

Structural and magnetic investigation of the interfaces of $\mathrm{Fe_3O_4/MgO(001)}$ with and without NiO interlayer

Contact Info

Product

Resources

About

Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y3Fe5O12 and inverted
Geprägs
¹
,
Klewe
²
,
Meyer
³

et al. 2020
Phys. Rev. B
Self Cite
12
0
4
0
View full text Add to dashboard Cite

Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y3Fe5O12 and inverted
Geprägs
¹
,
Klewe
²
,
Meyer
³

et al. 2020
Phys. Rev. B
Self Cite
12
0
4
0
View full text Add to dashboard Cite