O6 Sr2 Ho1 Re1

O6Sr2Ho1Re1 is an experimental oxide compound combining strontium, holmium, and rhenium in an oxygen-rich matrix, representing a complex mixed-metal oxide in the semiconductor class. This composition falls within research-stage materials exploring high-entropy or multi-principal-element oxides, which are being investigated for potential applications in thermoelectric devices, radiation-tolerant electronics, and high-temperature solid-state systems where conventional semiconductors degrade. The incorporation of rhenium—a refractory element with high-temperature stability—and rare-earth holmium suggests interest in extreme-environment performance, though practical engineering applications remain largely unexplored pending fundamental property characterization.