Fe3OSe

Fe3OSe is a compound consisting of iron, oxygen, and selenium. It is a member of the iron selenide family of superconductors, which exhibit superconductivity at relatively high temperatures compared to other superconducting materials. The compound is typically synthesized through solid-state reactions, where iron, selenium, and oxygen are heated together under controlled conditions to form Fe3OSe.

The crystal structure of Fe3OSe is orthorhombic, with a space group of Pnma. The compound is known for its layered structure, which consists of alternating layers of iron selenide and iron oxide. This layered structure is believed to contribute to its superconducting properties.

Fe3OSe exhibits superconductivity at temperatures up to 45 K (-228°C), which is relatively high for an iron-based superconductor. The superconducting transition temperature can be further increased by applying pressure or by substituting certain elements in the compound. For example, substituting cobalt for iron can increase the transition temperature to 55 K (-218°C).

The superconducting properties of Fe3OSe are of great interest to researchers due to their potential applications in high-temperature superconductors. However, the exact mechanism underlying the superconductivity in Fe3OSe is still not fully understood and is an active area of research.