DyTiFe<sub>11</sub> compound is a ferromagnetic substance.It has tetragonal body-centered ThMn<sub>12</sub>-typecrystallographic structure.At room temperature,t
Macroporous amino-carboxvlic chelating resin of acrylic acid series may concentrate trace rare earth inthe presence of 0.1 mol/l α-hydroxy-isobutyric acid at p