English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Precise measurement of the refractive index of stable silicon isotopes$^{28}$Si, $^{29}$Si, $^{30}$Si single crystals with enrichments above 99.9at.% and a silicon single crystal $^{nat}$Si of natural isotopic composition isperformed with the Fourier-transform interference refractometry method from1.06 to more than 80 mkm with 0.1 cm$^{-1}$ resolution and accuracy of $2\times 10^{-5} ... 1 \times 10^{-4}$. The oxygen and carbon concentrations inall crystals are within $5 \times 10^{15}$ cm$^{-3}$ and the content of metalimpurities is $10^{-5} ... 10^{-6}$ at.%. The peculiar changes of therefractive index in the phonon absorption region of all silicon single crystalsare shown. The coefficients of generalized Cauchy dispersion functionapproximating the experimental refractive index values all over the measuringrange are given. The transmission and Raman spectra are also studied.

Refractive index spectral dependence, Raman and transmission spectra of high-purity $^{28}$Si, $^{29}$Si, $^{30}$Si, and $^{nat}$Si single crystals