El alaoui belghiti

• F-K-Nb-O-Sr
• K-Nb-O-Sr
• Ba-Na-Nb-O-Ti
• Ba-F-Na-Nb-O
• Ba-Na-Nb-O
• electronic and electrical properties
• permittivity (dielectric constant)
• structural properties
• temperature for structural transition
• alkaline
• transitional
• chalcogen
• alkali
• nonmetal
• tetragonal