Corundum, Quaternary, Transitional, Phase transitions

• Al-O-Y-Zr
• Al-La-O-Zr
• Al-Nd-O-Zr
• Al-O-Sm-Zr
• Al-O-Yb-Zr
• phase diagram
• transitional
• corundum
• quaternary
• chalcogen
• oxide