Ge1 Te7 As4

Ge₁Te₇As₄ is a chalcogenide glass—a vitreous semiconductor compound combining germanium, tellurium, and arsenic—belonging to the amorphous materials family used in infrared optics and phase-change devices. This composition sits within the established Ge-Te-As ternary system widely studied for infrared window applications, optical data storage, and non-volatile memory technologies, where its combination of optical transmission in the mid-to-long infrared range and potential reversible crystallization behavior offers advantages over single-element or binary alternatives. Research interest in this specific stoichiometry centers on tuning thermal stability and switching properties for next-generation phase-change memory and integrated photonics applications.