Magnetic studies and removal of non-stoichiometry in MnO and CoO
- 1 March 1981
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 52 (3) , 2315-2316
- https://doi.org/10.1063/1.328916
Abstract
A major impediment in accurately determining the magnetic properties of the transition‐metal oxides (MnO, CoO, NiO, FeO) has been the presence of non‐stoichiometry (NS) in the available crystals. From studies in crystals of MnO and CoO, we report two important developments: First, the temperature‐dependent magnetic susceptibility (χ) provides an excellent probe for detecting NS and second, a method has been developed to remove NS. From these studies, the presence of Mn3O4 in MnO and that of cation vacanies in CoO is inferred. In MnO and CoO, NS has been removed to undetectable levels by annealing the single crystals in the presence of Mn and Co atmospheres, respectively, at 1300 K for about 200 hours. Possible applications of these techniques to other systems are also discussed.This publication has 10 references indexed in Scilit:
- Temperature-dependent magnetic susceptibility of marcasite (Fe)Physical Review B, 1979
- Control and measurement of stoichiometry in oxidesJournal of Magnetism and Magnetic Materials, 1978
- Electronic structure of Mott insulatorsAdvances in Physics, 1977
- A Gravimetric Study of Nonstoichiometric MnOJournal of the Electrochemical Society, 1971
- Diffusion of Manganese in Single Crystalline Manganous OxideJournal of the Electrochemical Society, 1970
- Étude de la susceptibilité magnétique de l'oxyde de manganèse et du sulfure de manganèse en poudre dans l'état ordonnéJournal de Physique, 1970
- Contribution to the Mn-O Phase Diagram at High TemperatureJournal of the Electrochemical Society, 1967
- Neutron and Optical Studies of Domains in NiOJournal of Applied Physics, 1960
- Multispin Axis Structures for AntiferromagnetsPhysical Review B, 1958
- Magnetic Structures of MnO, FeO, CoO, and NiOPhysical Review B, 1958