Lu-atom-ordered oxonitridoaluminosilicate Ba_0.9Ce_0.1LuAl_0.2Si_3.8N_6.9O_0.1

Area of Science:

• Materials Science
• Inorganic Chemistry
• Solid-State Chemistry

Background:

• Oxynitrides are advanced ceramic materials with unique properties.
• The synthesis and structural characterization of novel oxynitride compounds are crucial for developing new functional materials.

Purpose of the Study:

• To synthesize and characterize a new hexagonal oxynitride, Ba0.9Ce0.1LuAl0.2Si3.8N6.9O0.1.
• To determine the crystal structure and coordination environment of the constituent atoms.

Main Methods:

• High-temperature solid-state reaction synthesis under nitrogen atmosphere.
• X-ray single-crystal structure analysis to determine lattice parameters, space group, and atomic positions.

Main Results:

• A single crystal of Ba0.9Ce0.1LuAl0.2Si3.8N6.9O0.1 was successfully synthesized.
• The oxynitride crystallizes in a hexagonal system (space group P63mc) with determined lattice constants.
• The crystal structure is isostructural with BaYbSi4N7, with Ba/Ce and Lu atoms occupying specific coordination sites.

Conclusions:

• The successful synthesis and structural elucidation of this novel oxynitride expand the family of related compounds.
• The determined crystal structure provides a basis for understanding the properties and potential applications of barium cerium lutetium aluminosilicate nitride oxide.