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Title: | Synthesis and properties of a new ? polymorph of Li3CrO4 |
Authors: | Dissanayake, M.A.K.L. Garcia-Martin, S. Saez-Puche, R. Sumathipala, H.H. West, A.R. |
Issue Date: | 1994 |
Publisher: | Journal of Materials Chemistry |
Abstract: | ?-Li3CrO4, isostructural with ?-Li3PO4, has been synthesized by two routes. Reaction of Li2CO3 and Cr2O3 in a 5 : 1 mole ratio in flowing Ar at 800 �C yields ?-Li3CrO4, with a small amount of Li2O. The Li2CO3, seems to have two functions. It is an essential reactant and acts as a novel oxidant, promoting conversion of CrIII to CrV. Reaction of Li2CO3 and CrO3 in a 3 : 1 mole ratio in flowing Ar also gives phase-pure ?-Li3CrO4. Magnetic measurements show Curie?Weiss behaviour in the range 20?300 K with a magnetic moment of 1.70 �B consistent with CrV in tetrahedral coordination. Conductivity measurements show a modest level of electronic conduction. |
URI: | http://repository.kln.ac.lk/handle/123456789/4015 |
Appears in Collections: | Physics |
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