# Fileset

[241026 ogawa HighTcLowTc Supplimentary submit.pdf](https://mdr.nims.go.jp/filesets/9a31e7d5-9ac6-4003-be33-a2eaa58c841a/download)

## Creator

[Daisuke Ogawa](https://orcid.org/0009-0007-5388-6916), [Anton Bolyachkin](https://orcid.org/0000-0003-0420-1806), [Angayarkanni R. Dilipan](https://orcid.org/0000-0003-1859-1008), [Nikita Kulesh](https://orcid.org/0000-0001-7046-2671), [Hossein Sepehri-Amin](https://orcid.org/0000-0002-7856-7897), [Yukiko K. Takahashi](https://orcid.org/0000-0001-9197-7236)

## Rights

©2024 American Physical Society[In Copyright](http://rightsstatements.org/vocab/InC/1.0/)

## Other metadata

[Exchange-coupled <math display="inline">  <mi>Fe</mi></math>-<math display="inline">  <mi>Pt</mi></math>/<math display="inline">  <mi>Ru</mi></math>/<math display="inline">  <mi>Fe</mi></math>-<math display="inline">  <mi>Pt</mi></math> nanogranular films as potential heat-assisted-magnetic-recording media with reduced writing temperature](https://mdr.nims.go.jp/datasets/02c9db18-b811-453f-bc9b-d58ecd12cb3e)

## Fulltext

SUPPLEMENTAL MATERIALExchange-coupled Fe-Pt/Ru/Fe-Pt nanogranular films aspotential HAMR media with reduced writing temperatureDaisuke Ogawa,1, ∗ Anton Bolyachkin,1 Angayarkanni R. Dilipan,1, 2Nikita Kulesh,1 Hossein Sepehri-Amin,1 and Yukiko K. Takahashi1, †1National Institute for Materials Science, Tsukuba 305-0047, Japan2Graduate School of Science and Technology,University of Tsukuba, Tsukuba 305-8577, Japan(a)Fe-Pt/ /Fe-PtRu(0.5)FePtRu(b)Fe-Pt/ /Fe-PtRu(1.0)(c)Fe-Pt / /Fe-PtRu(2.0)4 nm4 nm4 nmFePtRuFePtRu100806040200Distance (nm)Content(at.%)0 4 8 12Fe Pt Ru100806040200Distance (nm)Content(at.%)0 4 8 12Fe Pt Ru100806040200Distance (nm)Content(at.%)0 4 8 12Fe Pt Ru100806040200Distance (nm)Content(at.%)0 4 8 12Fe Pt RuRu thickness (nm)0 1 2 301020Fecontentinspacerat.%()(d)FIG. S1. Cross-sectional HAADF-STEM images, EDS maps, and composition line profiles acrossthe highlighted regions of interest for the Fe-Pt/Ru/Fe-Pt continuous films with Ru thickness of(a) 0.5 nm, (b) 1.0 nm, and (c) 2.0 nm. (d) The content of diffused Fe in the Ru spacer dependingon its thickness. Dashed line is a guide to the eye.1-6 -2 0 42 6-4Magnetic field, (T)μ H0M(T)agnetization,μM0-1.0-0.50.00.51.0Fe-Pt (w/o Ru)-6 -2 0 42 6-4Magnetic field, (T)μ H0300 K380 K450 K520 K550 KFe-Pt / /Fe-PtRu(0.5)(a) (b)-6 -2 0 42 6-4Magnetic field, (T)μ H0300 K450 K5 0 K35 K65Fe-Pt/ /Fe-PtRu(1.0)(c)300 K4 0 K95 0 K8400 KFIG. S2. Out-of-plane hysteresis loops of (a) the FePt reference film and the Fe-Pt/Ru/Fe-Ptgranular films with Ru thickness of (b) 0.5 nm and (c) 1.0 nm measured at selected temperatures.∗ ogawa.daisuke@nims.go.jp† takahashi.yukiko@nims.go.jp2