Chalcogen, Fe-Nb-Se, Se-x polyhedra

• Fe-Nb-Se-V
• Fe-Nb-Se-Ta
• Fe-Nb-S-Se
• magnetic properties
• thermal and thermodynamic properties
• electronic and electrical properties
• Curie-Weiss paramagnetism
• structural properties
• transitional
• chalcogen
• selenide
• disordered
• antiferromagnetic
• monoclinic