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Abstract

Mixed lithium-transition metal oxides LiFe1-xCoxO2 (0 less than
or equal to x less than or equal to 1) have been studied by
powder neutron diffraction in the temperature range 1.5-100 K
and at room temperature. The low-temperature data analysis of
the high-flux neutron diffraction patterns reveals an
antiferromagnetic arrangement with a propagation vector k =
[00(1)/(2)]. The value obtained for the magnetic moment of Fe3+
ions at 1.5 K, mu(Fe3+) = 3.9 mu(B), is in good agreement with
the value deduced from magnetization data and is also
consistent with the high spin state of Fe3+ ion. The
crystallographic structure was determined by both X-ray and
high-resolution neutron diffraction measurements. (C) 2002
Elsevier Science.