# Fileset

[SM_ver3.pdf](https://mdr.nims.go.jp/filesets/5302530e-7e32-4e55-8437-07dab8d1c6c9/download)

## Creator

[Weinan Zhou](https://orcid.org/0000-0003-2946-9913), [Hirofumi Suto](https://orcid.org/0000-0003-4387-5862), [Yuya Sakuraba](https://orcid.org/0000-0003-4618-9550)

## Rights

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Weinan Zhou, Hirofumi Suto, Yuya Sakuraba; Single-material anomalous Nernst heat-flux sensor enabled by heat-assisted magnetization reversal. Appl. Phys. Lett. 11 May 2026; 128 (19): 192401 and may be found at https://doi.org/10.1063/5.0331671.[In Copyright](http://rightsstatements.org/vocab/InC/1.0/)

## Other metadata

[Single-material anomalous Nernst heat-flux sensor enabled by heat-assisted magnetization reversal](https://mdr.nims.go.jp/datasets/25dbb6e6-dcb1-49b1-88db-f8b9848cc459)

## Fulltext

Supplementary Material: Single-material anomalous Nernst heat-flux sensor enabledby heat-assisted magnetization reversalWeinan Zhou,a) Hirofumi Suto, and Yuya SakurabaResearch Center for Magnetic and Spintronic Materials,National Institute for Materials Science, Tsukuba 305-0047,Japana)Electronic mail: ZHOU.Weinan@nims.go.jp1FIG. S1. Out-of-plane XRD pattern of the thin film used in this study. The color map at thetop shows the corresponding two-dimensional diffraction image. A clear 110 superlattice peak ofL10-FePt is observed. The diffraction peaks labeled by ∗ originated from the MgO substrate. Theinset illustrates the stacking structure of the thin film, with the thickness of each layer given innanometer in parentheses.Alt text: Out-of-plane XRD pattern of the thin film used in this study.2FIG. S2. (a) M -H curves of the thin film measured at 300 K with H along the MgO [001] direction,(b) the MgO [−110] direction, and (c) the out-of-plane direction. The inset in (a) shows the curvemeasured with a small H increment around zero field. These results indicate that the magneticeasy axis of FePt is along the MgO [001] direction.Alt text: M -H curves of the thin film measured at 300 K. (a) and (b) and (c) Measured with Happlied along the MgO [001], MgO [−110], and out-of-plane directions, respectively.3FIG. S3. (a) M -H curves of the thin film measured at 300 K, (b) 320 K, (c) 340 K, (d) 360 K,(e) 380 K, and (f) 400 K with H along the MgO [001] direction. (g) The coercivity (Hc) andsaturation magnetization (Ms) of the FePt thin film as a function of temperature (T ) extractedfrom the curves in (a)-(f). Both Hc and Ms decrease with increasing T . µ0Hc = 163 mT at 300 K,consistent with that of a single FePt wire shown in Fig. 2(b). Meanwhile, µ0Hc = 123 mT at 400K. This value is comparable to the behavior of heat-assisted magnetization reversal with I = 41.2mA, as suggested by the estimated wire temperature due to Joule heating shown in Fig. 4(b).Alt text: M -H curves of the thin film measured with H along the MgO [001] direction at elevatedtemperature. (a) and (b) and (c) and (d) and (e) and (f) Measured at 300 K, 320 K, 340 K, 360 K,380 K, and 400 K, respectively. (g) The coercivity as a function of temperature. (h) The saturationmagnetization as a function of temperature.4FIG. S4. (a) Seebeck voltages (VSE) as a function of out-of-plane H measured with a heater powerof 0.09 W, (b) 0.16 W, (c) 0.25 W, and (d) 0.36 W at one side of the sample to generate in-plane∇T . The inset in (a) illustrates a schematic of the measurement setup. The overall VSE valuesincrease with increasing heater power. Meanwhile, the curves show little variation with sweepingH, and the values of VSE in each curve are equal within the noise level at µ0H = ±3 T, where Mof FePt is aligned to the direction of H. These results indicate that the magneto-Seebeck effect ofthe FePt thin film is negligibly small.Alt text: Seebeck effect of the thin film measured with in-plane temperature gradient and out-of-plane H. (a) and (b) and (c) and (d) Seebeck voltages as a function of magnetic field with a heaterpower of 0.09 W, 0.16 W, 0.25 W, and 0.36 W, respectively.5