KTaO₃ (Potassium tantalate)

Glasses, oxides and dielectrics

1 dataset, together covering 0.4–1.06 µm. Default: Fujii and Sakudo 1976: n 0.4–1.06 µm.

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Datasets

Fujii and Sakudo 1976: n 0.4–1.06 µm n 0.4–1.06 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# KTaO3 (Potassium tantalate): Fujii and Sakudo 1976: n 0.4–1.06 µm
ktao3 = ls.fetch_refractiveindex("main", "KTaO3", "Fujii", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ktao3.range_nm)  # (400, 1060) nm
eps = ktao3.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_a1f49beba3d0/lightsmith"
ktao3 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(ktao3.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (ktao3/fujii-sakudo-1976).

# ... load ktao3 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=ktao3)],
    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"]).

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_a1f49beba3d0/lightsmith?model=drude_lorentz"
ktao3_dl = ls.DrudeLorentz.model_validate(json.load(urllib.request.urlopen(url)))

A dispersive Drude–Lorentz model for time-domain solvers.

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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 KTaO3 (Potassium tantalate)

Potassium tantalate (KTaO₃) is a perovskite-structured crystal that has garnered interest in the field of optics and electronics. With its good mechanical and optical properties, KTaO₃ serves as a substrate for epitaxial growth of various complex oxides. Additionally, it is used in a variety of applications, including electro-optic modulators, pyroelectric detectors, and nonlinear optics. The material is transparent in the visible and infrared regions, making it valuable for a range of light-based technologies. It is generally non-toxic but should be handled with the usual precautions for chemicals and materials.

Other names: Potassium tantalate

KTaO<sub>3</sub> - The Materials Project

API: /v1/materials/mat_6201dc54fbe2 · slug ktao3