Refractive index database

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Optical constants of Sr (Strontium)
Rodríguez-de Marcos et al. 2012: n,k 0.00101–0.212 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Conditions & Spec sheet

n_is_absolute: true
wavelength_is_vacuum: true


Density: 2.58 g/cm3. Film deposited at room temperature.


L. Rodríguez-de Marcos, J. I. Larruquert, J. A. Aznárez, M. Vidal-Dasilva1, S. García-Cortés, J. A. Méndez, L. Poletto, F. Frassetto, A. M. Malvezzi, D. Bajoni, A. Giglia, N. Mahne, S. Nannarone. Transmittance and optical constants of Sr films in the 6-1220 eV spectral range, J. Appl. Phys. 111, 113533 (2012) (Numerical data kindly provided by Juan Larruquert)


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Strontium, Sr

Strontium (Sr) is a soft, silver-white alkaline earth metal that is found naturally in minerals like celestine and strontianite. While it is reactive with air and water, it is not as reactive as its periodic table neighbors like calcium or magnesium. Strontium has several isotopes, and its radioactive isotope, strontium-90, is a byproduct of nuclear reactions and poses health concerns due to its high-energy beta decay. Commercially, strontium is often used in the production of CRT glass for television tubes, as it blocks radiation. Furthermore, it has applications in pyrotechnics for the red flame in fireworks and flares. Strontium also has roles in medical applications; for example, the isotope strontium-89 is used in targeted therapies for bone cancers. Strontium compounds, like strontium ranelate, have been studied for potential use in osteoporosis treatments.

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