Ben haj amara

• La-Mn-O-Si
• La-Mn-O-Si-Sr
• Ba-La-Mn-O-Si
• Ca-La-Mn-O-Si
• Al-La-O-Si
• electronic and electrical properties
• conductivity or resistivity
• structural properties
• magnetic properties
• resonance spectra
• transitional
• chalcogen
• metalloid
• rare earth
• lanthanoid
• hexagonal