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Nonaqueous ytterbium, praseodymium, and erbium colloids and fine powders were prepared by cocondensation of the metals with 2-propanol and 2-butanone at 77 K. Films were formed from a mixture of the metals and metal oxides, and contained a certain amount of solvent. The powder X-ray diffraction patterns correspond to the respective lanthanide oxides. A complete characterization study by infrared spectroscopy...
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