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|Type:||Artigo de periódico|
|Title:||Structural effects in the EPR spectra of Ni(3+) in La(2)Ni(0.5)Li(0.5)O(4)|
|Abstract:||Electron paramagnetic resonance (EPR), Raman scattering, and neutron- and x-ray-diffraction experiments were performed in polycrystalline samples of La(2)N(0.5)Li(0.5)O(4) as a function of temperature. Structural studies confirm a partial cation ordering of Ni and Li at the metal sites. As the temperature decreases, EPR measurements show an increasing g-value anisotropy (g(perpendicular to)-g(parallel to)) and neutron and x-ray-diffraction experiments an increase of the c/a ratio. These results are interpreted in terms of the stabilization of the Ni(3+)(3d(7))(2)A(1g) low-spin configuration in the NiO(6) Jahn-Teller distorted octahedra.|
|Editor:||Amer Physical Soc|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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