Chalcogen, Delafossite, Ferroelectric, Transitional

• Cu-Fe-O
• Al-Cu-Fe-O
• Cu-Fe-Ni-O
• Cu-O
• Fe-O
• magnetic properties
• magnetic transitions
• electronic and electrical properties
• phase transitions
• structural transitions
• ferroelectric
• multiferroic
• delafossite
• chalcogen
• transitional
• trigonal
• monoclinic
• cubic