Substituent Influence of Yttria by Gadolinia on the Tetragonal Phase Stability for Y
2
O
3
–Ta
2
O
5
–ZrO
2
Ceramics at 1300 °C
Niu Xiaoqing
1
, Xie Min
1
, Zhou Fen
1
, Mu Rende
2
, Song Xiwen
1,
*
, An Shengli
1
Fig. 3. XRD patterns of the GdO 1.5 –YO 1.5 –TaO 2.5 –ZrO 2 ceramics annealed at 1300 °C for 50 h.