Fe₃O₄ (Iron(II,III) oxide, Magnetite)

Semiconductors and photonic platforms

1 dataset, together covering 0.21–55.56 µm. Default: Querry 1985: n,k 0.21–55.6 µm.

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Datasets

Querry 1985: n,k 0.21–55.6 µm n,k 0.21–55.56 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# Fe3O4 (Iron(II,III) oxide, Magnetite): Querry 1985: n,k 0.21–55.6 µm
fe3o4 = ls.fetch_refractiveindex("main", "Fe3O4", "Querry", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(fe3o4.range_nm)  # (210, 55555.6) nm
eps = fe3o4.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_bf02e23aace1/lightsmith"
fe3o4 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(fe3o4.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (fe3o4/querry-1985).

# ... load fe3o4 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=fe3o4)],
    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 Fe3O4 (Iron(II,III) oxide, Magnetite)

Iron(II,III) oxide (Fe₃O₄), also known as magnetite, is a black, magnetic mineral with multiple applications, including in the field of optics. It possesses unique magnetic properties that make it ideal for magneto-optical recording and sensing technologies. The material's interaction with light can be modified by external magnetic fields, providing a platform for tunable optical devices. Additionally, Fe₃O₄ nanoparticles have garnered attention for use in photothermal therapy, owing to their capacity to absorb near-infrared radiation and convert it to heat. This compound combines magnetic and optical functionalities, offering a unique palette of features for contemporary optical research and applications. Minerals: Magnetite, Lodestone (naturally magnetized magnetite).

Other names: Iron(II,III) oxide, Magnetite, Iron(II,III) oxide, Ferrous ferric oxide, Ferroso ferric oxide, Black iron oxide, Rust, Iron(II) diiron(III) oxide, Iron oxide, Triiron tetraoxide, Magnetite, Lodestone

API: /v1/materials/mat_a859fa5eb232 · slug fe3o4