Scattering Study of Microstructurally Birefringent Glasses

Microstructurally birefringent, phase‐separated borosilicate glasses were investigated by X‐ray small‐angle scattering and light scattering. X‐ray small‐angle scattering data confirmed the presence of ellipsoidal particles and the light‐scattering data indicated the presence of anisotropic distribution of particles. These observations support the previous contention that the positive birefringence is due to the form birefringence and the negative birefringence is due to the anisotropic distribution of spherical particles. Copyright © 1980, Wiley Blackwell. All rights reserved