Order-disorder transition and weak ferromagnetism in the perovskite metal formate frameworks of [(CH3)2NH2][M(HCOO)3] and [(CH3)2ND2][M(HCOO)3] (M = Ni, Mn).

Order-disorder transition and weak ferromagnetism in the perovskite metal formate frameworks of [(CH3)2NH2][M(HCOO)3] and [(CH3)2ND2][M(HCOO)3] (M = Ni, Mn).