oxypnictides
Oxypnictides are a class of inorganic compounds that contain oxygen and a pnictogen element. Pnictogens are the elements in group 15 of the periodic table, including nitrogen, phosphorus, arsenic, antimony, and bismuth. Therefore, oxypnictides can be formed with various combinations of these elements and oxygen. A common and well-studied group of oxypnictides are the iron-based superconductors, which often have a general formula like LnOFeAs, where Ln represents a rare-earth element. These materials exhibit a unique crystal structure and have garnered significant scientific interest due to their superconducting properties at relatively high temperatures.
The synthesis of oxypnictides can be achieved through various methods, often involving solid-state reactions at elevated