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Orthorhombic LiMnO2 (o-LiMnO2) are synthesized by hydrothermal technique. Two samples were obtained which crystallize in orthorhombic structure with space group Pmnm. From rietveld refinements,the samples exhibit respectively a spot of cationic disorder on the lithium and manganese sites 4% and 8%,which,however,has no great influence on the magnetism. We have investigated the static and dynamical response of clusters in o-LiMnO2 oxide,and a sequenceof transformations of magnetic states,i.e. antiferromagnetic to ferromagnetic state at T≤TC≈118K and ferromagnetic to canted spin glass state at T≤Tf≈50K are observed.
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Keywords:
- orthorhombic LiMnO2 /
- cationic disorder /
- re-entrant spin glass
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