title: A two-step field-induced magnetic transition in a novel layered cobalt diphosphonate.
abstract: Compound Na6Co7(hedp)2(hedpH)4(H2O)4 x 8H2O (hedp = 1-hydroxyethylidenediphosphonate) with a novel layer structure is reported in this paper. The layer maybe viewed as made up from two types of chains each of composition Co3(hedp)2 and Co2(hedpH)2. Magnetic measurements at 1.8 K reveal a metamagnetic transition at ca. 6.5 kOe, followed by a second transition to a ferromagnetic state at ca. 30 kOe.
authors.affiliation: State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing University, Nanjing 210093, PR China.
authors.forename: Ping
authors.initials: P
authors.lastname: Yin
authors.forename: Song
authors.initials: S
authors.lastname: Gao
authors.forename: Li-Min
authors.initials: LM
authors.lastname: Zheng
authors.forename: Zheming
authors.initials: Z
authors.lastname: Wang
authors.forename: Xin-Quan
authors.initials: XQ
authors.lastname: Xin