DOI: 10.5281/zenodo.18624659
title: Coercivity influence of nanostructure in SmCo-1:7 magnets: High-throughput micromagnetic data

description: This dataset contains supplementary data and utilities of the publication "Coercivity influence of nanostructure in SmCo-1:7 magnets: Machine learning of high-throughput micromagnetic data" (Yang, 2026).

In this work, high-throughput micromagnetic simulations (42,300 sets) were performed for forward and inverse machine learning. The dataset systematically spans variations in nanostructural geometry (e.g., phase thickness, spacing, and fractions, see Table 1.),  and intrinsic magnetic properties under controlled defect conditions. The resulting coercivity $H_\mathrm{c}$ and pinning descriptors ($\Phi_\mathrm{p}$) serve as the supervised targets for training and validating the predictive and inverse-design neural network models.

This dataset includes:



combined_postproc_data.csv: Complete dataset.

overview.png: Overview of the distribution of nanostructural descriptors.

metadata.yml: Information of each data column (Table 1 in .yml format)


Table 1: The geometric descriptors and magnetic properties of the nanoscopic phases.




Quantities
Symbols
Descriptions
Unit


L
$L$
Average interval of stripe-shaped Sm(Co,Cu)5 phase
nm


d
$d$
Average interval of platelet-shaped Zr-rich phase
nm


ws
$w_\mathrm{S}$
Average thickness of Sm(Co,Cu)5 phase
nm


wZ
$w_\mathrm{Z}$
Average thickness of Zr-rich phase
nm


alpha
$\alpha$
Misorientation angle α (i.e., the angle between the applied magnetic field and the magnetocrystalline easy-axis)
deg


p15
$\varphi_\mathrm{S}$
Volume fraction of Sm(Co,Cu)5 phase*
-


pZ
$\varphi_\mathrm{Z}$
Volume fraction of Zr-rich phase**
-


domain
-
Type of the micromagnetic domain***
-


Aex(Z)
$A_\mathrm{e}^\mathrm{(Z)}$
Exchange stiffness of Zr-rich phase
pJ m-1


Aex(15)
$A_\mathrm{e}^\mathrm{(S)}$
Exchange stiffness of Sm(Co,Cu)5 phase
pJ m-1


Aex(217)
$A_\mathrm{e}^\mathrm{(M)}$
Exchange stiffness of Sm2(Co,Fe)17 phase
pJ m-1


Ku(Z)
$K_\mathrm{u}^\mathrm{(Z)}$
Uniaxial magnetocrystalline anisotropy of Zr-rich phase
MJ m-3


Ku(15)
$K_\mathrm{u}^\mathrm{(S)}$
Uniaxial magnetocrystalline anisotropy of Sm(Co,Cu)5 phase
MJ m-3


Ku(217)
$K_\mathrm{u}^\mathrm{(M)}$
Uniaxial magnetocrystalline anisotropy of Sm2(Co,Fe)17 phase
MJ m-3


Msat(Z)
$M_\mathrm{s}^\mathrm{(Z)}$
Saturation magnetization of Zr-rich phase
kA m-1


Msat(15)
$M_\mathrm{s}^\mathrm{(S)}$
Saturation magnetization of Sm(Co,Cu)5 phase
kA m-1


Msat(217)
$M_\mathrm{s}^\mathrm{(M)}$
Saturation magnetization of Sm2(Co,Fe)17 phase
kA m-1


sig_dw(Z)
$\sigma_\mathrm{dw}^\mathrm{(Z)}$
Bloch domain-wall energy of Zr-rich phase
mJ m-2


sig_dw(15)
$\sigma_\mathrm{dw}^\mathrm{(S)}$
Bloch domain-wall energy of Sm(Co,Cu)5 phase
mJ m-2


sig_dw(217)
$\sigma_\mathrm{dw}^\mathrm{(M)}$
Bloch domain-wall energy of Sm2(Co,Fe)17 phase
mJ m-2


l_dw(Z)
$l_\mathrm{dw}^\mathrm{(Z)}$
Bloch domain-wall thickness of Zr-rich phase
nm


l_dw(15)
$l_\mathrm{dw}^\mathrm{(S)}$
Bloch domain-wall thickness of Sm(Co,Cu)5 phase
nm


l_dw(217)
$l_\mathrm{dw}^\mathrm{(M)}$
Bloch domain-wall thickness of Sm2(Co,Fe)17 phase
nm


Hc
$\mu_0 H_\mathrm{c}$
Coercivity field
T


Phi_p
$\Phi_\mathrm{p}$
Inhomogeneity factor****
-




*: $\varphi_{\mathrm{S}}=\frac{w_{\mathrm{S}}\left(2 L-w_{\mathrm{S}}\right)}{L^2}-\frac{w_{\mathrm{S}} w_{\mathrm{Z}}}{L d}$.

**: $\varphi_Z=\frac{w_Z}{d}$.

***: These data contain values with 's' for S-domain (256x256x64 nm$^3$), and 'l' for large-domain (384x384x64 nm$^3$).

****: $\Phi_{\mathrm{p}}=\frac{H_{\mathrm{c}}-H_{\mathrm{p}}}{H_{\mathrm{c}}}$, see Yang, 2026.