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Hydrothermal Synthesis and Magnetic Characterization of the Quaternary Oxide CoMo2Sb2O10
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Number of Authors: 3
2016 (English)In: Inorganic Chemistry, ISSN 0020-1669, E-ISSN 1520-510X, Vol. 55, no 21, 11490-11496 p.Article in journal (Refereed) Published
Abstract [en]

The new quaternary layered oxide CoMo2Sb2O10 was synthesized by hydrothermal synthesis techniques, and its structure was determined from single-crystal X-ray diffraction data. CoMo2Sb2O10 crystallizes in the monoclinic space group C2/c with one Sb3+, Mo6+, and Co2+ atom site per unit cell, respectively. The crystal structure contains building units consisting of [Co2O8](n), [Mo2O8](n), and [SbO2](n) chains. These are connected through corner sharing to form charge neutral [CoMo2Sb2O10](n) layers. Thermal decomposition of CoMo2Sb2O10 starts at 550 degrees C. The magnetic susceptibility follows a Curie Weiss law above 50 K with a Curie constant of C = 3.46 emu K mol(-1) corresponding to an effective moment of mu(eff) = 5.26 mu(B) per cobalt atom and a Curie-Weiss temperature theta = -13.2 K. Short-range anti-ferromagnetic ordering dominates below 5 K. Magnetic susceptibility and heat capacity data can be successfully modeled by the predictions from an Ising linear chain with an intrachain spin exchange of ca. -7.8 K.

Place, publisher, year, edition, pages
2016. Vol. 55, no 21, 11490-11496 p.
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:su:diva-136747DOI: 10.1021/acs.inorgchem.6b02031ISI: 000387428200075OAI: oai:DiVA.org:su-136747DiVA: diva2:1056830
Available from: 2016-12-15 Created: 2016-12-14 Last updated: 2016-12-15Bibliographically approved

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