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机译:
Harbin Inst Technol, Sch Astronaut, Harbin 150006, Peoples R China;
Sun Yat Sen Univ, Sch Phys Sci & Engn, Guangzhou, Peoples R China;
Harbin Inst Technol, Dept Appl Chem, Harbin 150006, Peoples R China;
electronic structure; optical properties; dielectric function; density functional theory; DENSITY-FUNCTIONAL METHODS; RARE-EARTH TRIHALIDES; LANTHANIDE TRIHALIDES; INFRARED-SPECTRA; SPECTROSCOPY; HALIDES; BATIO3; LA; LN;