Grain boundary segregation and microwave dielectric properties of low loss Mg1·5Zn0·5SiO4 ceramics containing Bi2O3. - Lee, S. T.; Jo, Y. H.; Kim, H. E.; Youn, D. H.; Choi, I. J.; Key, S. H.; Kang, C.-Y.; Hong, W. S.; Cho, Y. S. (Advances in Applied Ceramics: Structural, Functional & Bioceramics, 2010)