A new compound Na5Mn4(PO4)4F4·2H2O with a rarely mixed valence spin chain showing multiple magnetic transitions†
Abstract
A new compound Na5Mn4(PO4)4F4·2H2O was successfully obtained, featuring a typical channel structure composed of rarely mixed valence Mn2+/Mn3+ spin chains and PO4 tetrahedra, where H2O molecules are located inside the channels. Magnetic measurements show that this compound possesses successive multiple magnetic transitions at low temperature.