Er3SiSe2O10F

Er3SiSe2O10F is a rare-earth ceramic compound containing erbium, silicon, selenium, oxygen, and fluorine, representing a mixed-anion ceramic system that combines both oxide and fluoride phases. This material is a research-phase compound studied for its potential in optical, electronic, and thermal applications where rare-earth-doped ceramics offer tunable properties; the inclusion of fluorine and selenium suggests possible photonic or infrared applications, though this specific composition remains largely experimental and not yet in established commercial production.