De sousa meneses

• Mn-O-Pr
• Bi-Mn-O
• H-N-O-S
• Gd-Mn-O
• Mn-O-Sm
• optical properties
• phonons
• reflectivity
• electronic and electrical properties
• chalcogen
• ferroelectric
• non-disordered
• ternary
• transitional
• orthorhombic