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Composition of the synthesized oxide powders and the corresponding reagents.
| Oxide | Concentration (mol%) | Precursor | |
|---|---|---|---|
| Powder-Mg | Powder-Sr | ||
| SiO2 | 60 | 60 | Si(OC2H5)4 (TEOS) (Aldrich, St. Louis, MO, USA) |
| P2O5 | 5 | 5 | PO(OC2H5)3 (TEP) (Merck, St. Louis, MO, USA) |
| CaO | 25 | 25 | Ca(NO3)2·4H2O (Merck, St. Louis, MO, USA) |
| ZnO | 5 | 5 | Zn(NO3)2·6H2O (Sigma-Aldrich, St. Louis, MO, USA) |
| MgO | 5 | - | Mg(NO3)2·6H2O (Merck, St. Louis, MO, USA) |
| SrO | - | 5 | Sr(NO3)2 (Sigma-Aldrich, St. Louis, MO, USA) |
