Abstract
A new compound MgCoMnO4 has been synthesised by the oxide method. It crystallizes in a tetragonal spinel structure witha=8.30 A andc=8.46 A. The observed crystal symmetry is associated with the existence of Mn+3 on theB sites. The compound isn type semi-conductor with activation energy ΔE=0.33 eV. The electrical properties show that it can be regarded as a properly substituted MgMn2O4 by Co+3 ions. It is paramagnetic withC M=5.75 and ϑ a =−160°K. All these results show the ionic configuration of the compound as Mg+2 [Co+3 Mn+3] O4.
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References
Aiyama Y 1966J. Phys. Soc. Jpn. 21 1684
Bongers P F 1957 Magnetic susceptibility measurements of Zn-Mn spinels Ph. D. Thesis, Leiden University, Leiden
Boucher B, Buhl R and Perrin M 1968J. Appl. Phys. 39 632
Cossee P 1956Red. Trav. Chim. 75 1089
Economos J 1955J. Ceram. Soc. 38 241
Figgis B N and Nyholm R S 1959J. Chem. Soc. 331
Jonker G H 1959J. Phys. Chem. Solids 9 165
Kshirsagar S T and Sabane C D 1971Jpn. J. Appl. Phys. 10 794
Kulkarni D K 1970 X-ray spectroscopic study of some spinels Ph. D. Thesis, Nagpur University, Nagpur
Kulkarni D K and Mande C 1970J. Phys. D3 434
Miller A 1959J. Appl. Phys. Suppl. 30 24 S
Muramori K and Miyahara S 1960J. Phys. Soc. Jpn. 21 1684
Navrotsky A and Kleppa O J 1968J. Inorg. Nucl. Chem. 30 479
Roth W L 1964J. Phys. 25 507
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Joshi, S.G., Kulkarni, D.K. & Khandekar, P.V. Structural, magnetic and electrical study of MgCoMnO4 . Bull. Mater. Sci. 4, 47–51 (1982). https://doi.org/10.1007/BF02744465
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DOI: https://doi.org/10.1007/BF02744465