Chalcogen, Delafossite, Ferroelectric, Multiferroic, Oxide, Trigonal

• Cu-Fe-O
• Al-Cu-Fe-O
• Cu-Fe-Ni-O
• Cu-Eu-Fe-O
• Cu-Fe-Ho-O
• magnetic properties
• electronic and electrical properties
• magnetic transitions
• magnetization
• phase transitions
• ferroelectric
• delafossite
• chalcogen
• antiferromagnetic
• multiferroic