Katrych, Pnictogen, Rare earth

• As-F-Fe-O-Sm
• As-Fe-O-P-Sm
• As-Fe-Gd-O
• As-Fe-O-Sm
• As-Fe-O-Sm-Th
• structural properties
• magnetic properties
• superconductivity
• electronic and electrical properties
• conductivity or resistivity
• pnictogen
• transitional
• lanthanoid
• rare earth
• metalloid
• tetragonal
• orthorhombic