Figure 7
From: Preparation of colourless phosphate glass by stabilising higher Fe[II] in microwave heating

Fe-redox ratio [Fe2+/∑ Fe] in glasses with varying concentration of Sn in conventional heating.
From: Preparation of colourless phosphate glass by stabilising higher Fe[II] in microwave heating

Fe-redox ratio [Fe2+/∑ Fe] in glasses with varying concentration of Sn in conventional heating.