Optical absorption spectra and electron diffraction patterns of rare-earth oxycarbonates |
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| Authors: | H. Dexpert E. Antic-Fidancev D. R. Svoronos P. Caro |
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| Affiliation: | (1) Laboratoire des Eléments de Transition dans les Solides, C.N.R.S. ER 210, France;(2) Laboratoires de Bellevue, 1 Place Aristide Briand, 92190 Meudon-Bellevue, France |
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| Abstract: | The 4.2 K optical absorption spectra of Ia-(NdO)2CO3 and II-(NdO)2CO3 are reported. Type Ia exhibits, apparently, a single site for neodymium, and type II, at least two sites. Electron-diffraction patterns obtained from flakes suggest a large orthorhombic unit cell for type Ia and confirm the hexagonal symmetry of the unit cell of type II. |
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