Strain-Induced Birefringence in Fluoride Films on Uranium Dioxide

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Science  26 Jun 1964:
Vol. 144, Issue 3626, pp. 1570-1572
DOI: 10.1126/science.144.3626.1570


Optically birefringent microstructures are formed within fluoride films that are produced on uranium dioxide by hydrofluorination. The positive molar volume change of the reaction produces nonuniform tensile and compressive stresses around sites of surface roughness which result in optical double refraction.