Preparation of ytterbium and europium borides from Yb(II) and Eu(II) boron hydride precursors
Conference
·
OSTI ID:214955
- Univ. of Tennessee, Chattanooga, TN (United States)
Ytterbium(II) and europium(II) boron hydride complexes were prepared via ammonia reduction reactions between ytterbium or europium metal and ammonium salts of B{sub 3}H{sub 8}{sup -}, B{sub 10}H{sub 10}{sup 2-}, and B{sub 12}H{sub 12}{sup 2-}. Divalent lanthanide aminoborates were also prepared by this method. Bonding interactions between the boron hydride and metal center were studied by {sup 1}H NMR, {sup 11}B NMR, and infrared spectroscopy. The divalent lanthanide precursor complexes were heated between 550{degrees}C and 1000{degrees}C to form the corresponding borides, YbB{sub 2}, YbB{sub 4}, YbB{sub 6}, and EuB{sub 6}. Tantalum foil substrates were coated with a dilute solution of ytterbium borohydride and heated to produce thin films of YbB{sub 2}. The thin film samples were studied by Scanning Electron Microscopy.
- OSTI ID:
- 214955
- Report Number(s):
- CONF-950801--
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:6969899