ZrF4

ZrF₄ (zirconium tetrafluoride) is an inorganic ceramic compound and a key constituent of heavy-metal fluoride glasses used in advanced optical and photonic applications. It is most widely recognized as the primary component of ZBLAN glass (zirconium-barium-lanthanum-aluminum-sodium fluoride), valued for its exceptional infrared transparency, low phonon energy, and minimal scattering losses across a broad wavelength range. Engineers select ZrF₄-based glasses for mid-infrared fiber optics, thermal imaging systems, and high-power laser delivery where conventional silica fibers fail, though the material requires careful handling due to hygroscopic sensitivity and higher cost compared to conventional optical materials.