TY - JOUR
T1 - The phase relations in the system In2O3-TiO2-MgO at 1100 and 1350°C
AU - Kimizuka, Noboru
AU - Brown, Francisco
AU - Flores, Maria J.R.
AU - Nakamura, Masaki
AU - Michiue, Yuichi
AU - Mohri, Takahiko
N1 - Funding Information:
One of the authors (N.K.) expresses his sincere thanks to Professor N. Ishizawa, Tokyo Institute of Technology, for his helpful discussion. A part of the present work was "nancially supported by the Japan International Cooperation Agency.
PY - 2000
Y1 - 2000
N2 - The phase relations in the system In2O3-TiO2-MgO at 1100 and 1350°C are determined by a classical quenching method. In this system, there are four pseudobinary compounds, In2TiO5, MgTi2O5 (pseudobrookite type), MgTiO3 (ilmenite type), and Mg2TiO4 (spinel type) at 1100°C. At 1350°C, in addition to these compounds there exist a spinel-type solid solution Mg(2-x)In(2x)Ti(1-x)O4 (0 ≤ x ≤ 1) and a compound In6Ti6MgO22 with lattice constants a = 5.9236(7) Å, b = 3.3862(4) Å, c =6.3609(7) Å, β = 108.15(1)°, and q =0.369, which is isostrucrural with the monoclinic In3Ti2FeO10 in the system In2O3-TiO2-MgO. The relation between the lattice constants of the spinel phase and the composition nearly satisfies Vegard's law. In6Ti6MgO22 extends a solid solution range to In20Ti17Mg3O67 with lattice constants of a = 5.9230(5) Å, b =3.3823(3) Å, c =6.3698(6) Å, β = 108.10(5)°, and q =0.360. The distributions of constituent cations in the solid solutions are discussed in terms of their ionic radius and site preference effect.(C) 2000 Academic Press.
AB - The phase relations in the system In2O3-TiO2-MgO at 1100 and 1350°C are determined by a classical quenching method. In this system, there are four pseudobinary compounds, In2TiO5, MgTi2O5 (pseudobrookite type), MgTiO3 (ilmenite type), and Mg2TiO4 (spinel type) at 1100°C. At 1350°C, in addition to these compounds there exist a spinel-type solid solution Mg(2-x)In(2x)Ti(1-x)O4 (0 ≤ x ≤ 1) and a compound In6Ti6MgO22 with lattice constants a = 5.9236(7) Å, b = 3.3862(4) Å, c =6.3609(7) Å, β = 108.15(1)°, and q =0.369, which is isostrucrural with the monoclinic In3Ti2FeO10 in the system In2O3-TiO2-MgO. The relation between the lattice constants of the spinel phase and the composition nearly satisfies Vegard's law. In6Ti6MgO22 extends a solid solution range to In20Ti17Mg3O67 with lattice constants of a = 5.9230(5) Å, b =3.3823(3) Å, c =6.3698(6) Å, β = 108.10(5)°, and q =0.360. The distributions of constituent cations in the solid solutions are discussed in terms of their ionic radius and site preference effect.(C) 2000 Academic Press.
KW - InFeO
KW - InTiFeO
KW - InTiMgO
KW - MgInO
KW - Phase relations
KW - Pyrochlore-type
UR - http://www.scopus.com/inward/record.url?scp=0033667495&partnerID=8YFLogxK
U2 - 10.1006/jssc.1999.8591
DO - 10.1006/jssc.1999.8591
M3 - Artículo
SN - 0022-4596
VL - 150
SP - 276
EP - 280
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
IS - 2
ER -