The phase relations in the system In 2O 3 A2BO 4 BO at elevated temperatures ( A: Fe, Ga, or Cr; B: Mg, Co, Ni, or Cu): Part II

Abstract

The phase relations in the systems In 2O 3Ga 2MgO 4MgO at 1300°C, In 2O 3Fe 2NiO 4NiO at 1200°C, In 2O 3Ga 2NiO 4NiO at 1200°C, In 2O 3Cr 2NiO 4NiO at 1200°C, In 2O 3Cr 2CoO 4CoO at 1200°C, and In 2O 3Cr 2CuO 4CuO at 1000°C were determined by classical quenching methods. In the system In 2O 3Ga 2MgO 4MgO there exist two ternary phases, namely, InGaO 3(MgO) with the YbFe 2O 4-type crystal structure and InGaO 3(MgO) 2 with the InFeO 3(ZnO) 2-type crystal structure. In the system In 2O 3 A 2NiO 4NiO ( A = Fe, Ga, or Cr), there is a spinel solid-solution between In ANiO 4 and A 2NiO 4. There is no ternary compound in the systems In 2O 3Cr 2CoO 4CoO and In 2O 3Cr 2CuO 4CuO, respectively. The classification of the phase relations in the system In 2O 3 A 2 BO 4 BO ( A: Fe, Ga, or Cr; B: Mg, Co, Ni, Cu, or Zn) is made in terms of the crystal structure of the ternary In ABO 4 compound.