Magnetic neutron scattering of thermally quenched K-Co-Fe Prussian blue analog photomagnet

Magnetic order in the thermally quenched photomagnetic Prussian blue analog coordination polymer K sub(0.27)Co[Fe(CN) sub(6)] sub(0.73)[D sub(2) O sub(6)] sub(0.27) times 1.42D2 O has been studied down to 4 K with unpolarized and polarized neutron powder diffraction as a function of applied magnetic field. Analysis of the data allows the on-site coherent magnetization of the Co and Fe spins to be established. Specifically, magnetic fields of 1 and 4 T induce moments parallel to the applied field, and the sample behaves as a ferromagnet with a wandering axis.