Abstract
Co 3(HPO 4) 2(OH) 2 has a monoclinic symmetry (space group P2 1/ n), with a = 7.532(1)Å, b = 7.516(1)Å, c = 7.700(2)Å, β = 121.91(1)°, Z = 2. Systematic twinning prevents structural determination from single crystal data. The structure is determined from X-ray powder data by direct methods, the refinements using the Rietveld method ( R B = 0.043, R WP = 0.098). The hydrogen atoms are located from neutron powder diffraction data. The material is isostructural with the mineral lazulite. Magnetic properties show a rather complex behavior. A metamagnetic transition is observed at H c = 0.12T below the long range ordering temperature ( T N = 10.6K) The thermal evolution of the magnetic properties above this temperature may be explained by antiferromagnetic coupling between weakly ferromagnetic ordered layers.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
