Two stage magnetic ordering and spin idle behavior of the coordination polymer Co3(OH)2(C4O4)2·3H2O determined using neutron diffraction

Richard A Mole; John A Stride; Paul F Henry; Markus Hoelzel; Anatoliy Senyshyn; Antonio Alberola; Carlos J Gómez Garcia; Paul R Raithby; Paul T Wood

doi:10.1021/ic101897a

Two stage magnetic ordering and spin idle behavior of the coordination polymer Co3(OH)2(C4O4)2·3H2O determined using neutron diffraction

Inorg Chem. 2011 Mar 21;50(6):2246-51. doi: 10.1021/ic101897a. Epub 2011 Feb 4.

Authors

Richard A Mole¹, John A Stride, Paul F Henry, Markus Hoelzel, Anatoliy Senyshyn, Antonio Alberola, Carlos J Gómez Garcia, Paul R Raithby, Paul T Wood

Affiliation

¹ Forschungsneutronenquelle Heinz Maier Leibnitz (FRM II), Technische Universität München, Lichetenbergstrasse 1, 85747 Garching, Germany.

PMID: 21294523
DOI: 10.1021/ic101897a

Abstract

We report the magnetic structure of two of the magnetically ordered phases of Co(3)(OH)(2)(C(4)O(4))(2)·3H(2)O, a coordination polymer that consists of a triangular framework decorated with anisotropic Co(II) ions. The combination of neutron diffraction experiments and magnetic susceptibility data allows us to identify one phase as displaying spin idle behavior, where only a fraction of the moments order at intermediate temperatures, while at the lowest temperatures the system orders fully. This novel magnetic behavior is discussed within the framework of a simple Hamiltonian and representational analysis and rationalizes this multiphase behavior by considering the combination of frustration and anisotropy.