EuS (Europium sulfide)

Semiconductors and photonic platforms

1 dataset, together covering 0.19–1.7 µm. Default: Meretska et al. 2022: thin film; n,k 0.190–1.700 µm.

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Datasets

Thin film

Meretska et al. 2022: thin film; n,k 0.190–1.700 µm n,k 0.19–1.7 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# EuS (Europium sulfide): Meretska et al. 2022: thin film; n,k 0.190–1.700 µm
eus = ls.fetch_refractiveindex("main", "EuS", "Meretska", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(eus.range_nm)  # (190, 1700) nm
eps = eus.eps([633])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_88215bd0270e/lightsmith"
eus = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(eus.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (eus/meretska-2022).

# ... load eus as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=eus)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=400, stop_nm=1000, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength

Same spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).

Materials guide Open a sphere of it in Studio Quick start Ask the community

Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.

About EuS (Europium sulfide)

Europium sulfide (EuS) is a compound characterized by its ferromagnetic behavior at low temperatures, with a Curie temperature of approximately 16.6 K. In the realm of optical applications, EuS has been studied for its potential in magneto-optical devices and as a component in spintronic systems. Its strong interaction with light and magnetic fields offers the possibility of modulating optical signals via magnetic controls. Additionally, thin films of EuS can be applied to other materials to enhance their magneto-optical properties. Though not as commonly used as europium-doped glasses or crystals, Europium sulfide offers a unique set of magnetic and optical properties that are of interest for specialized applications in both research and technology.

Other names: Europium sulfide, Europium(II) sulfide, Europium sulphide, Europium(II) sulphide

API: /v1/materials/mat_256db91945bd · slug eus