摘要
The Gd-Fe-Ti ternary system has been investigated by means of X-ray diffraction, and its room temperature section determined, in which two ternary intermetallic compounds, GdFe_(11)Ti and GdFe_9Ti_2, have been observed. GdFe_(11)Ti has a tetragonal structure, belonging to the type ThMn_(12), with a space group I4/mmm, and the lattice parameters at room temperature a=0.8522nm, c=0.4790nm, c/a=0.562, z=2. The observed density is 7.82 g/cm^3 and the calculated density is 7.84g/cm^3. The Curie temperature of GdFe_(11)Ti is 349℃. GdFe_9Ti_2 has a tetragonal structure, belonging to the type Ce (Mn_(0.55)Ni_(0.45))_(11), with a space group P4/mbm. The lattice parameters at room temperature are a=0.8245nm, c=0.4832 nm,c/a=0.586, and z=2. The observed density is 7.6g/cm^3 and the calculated density is 7.64 g/cm^3.
The Gd-Fe-Ti ternary system has been investigated by means of X-ray diffraction, and its room temperature section determined, in which two ternary intermetallic compounds, GdFe<sub>11</sub>Ti and GdFe<sub>9</sub>Ti<sub>2</sub>, have been observed. GdFe<sub>11</sub>Ti has a tetragonal structure, belonging to the type ThMn<sub>12</sub>, with a space group I4/mmm, and the lattice parameters at room temperature a=0.8522nm, c=0.4790nm, c/a=0.562, z=2. The observed density is 7.82 g/cm<sup>3</sup> and the calculated density is 7.84g/cm<sup>3</sup>. The Curie temperature of GdFe<sub>11</sub>Ti is 349℃. GdFe<sub>9</sub>Ti<sub>2</sub> has a tetragonal structure, belonging to the type Ce (Mn<sub>0.55</sub>Ni<sub>0.45</sub>)<sub>11</sub>, with a space group P4/mbm. The lattice parameters at room temperature are a=0.8245nm, c=0.4832 nm,c/a=0.586, and z=2. The observed density is 7.6g/cm<sup>3</sup> and the calculated density is 7.64 g/cm<sup>3</sup>.
基金
Project supported by the National Natural Science Foundation of China
