BINARY DODECABORIDES
Journal Article
·
· J. Inorg. & Nuclear Chem.
Cubic dodecaborides of Dy, Ho, Er, Tm, Lu, and Y, isomorphous with UB/ sub 12/ and ZrB/sub 12/, were prepared by the reaction of metal sesquioxides with excess amorphous boron at 1400--1500 deg C in a protective helium atmosphere. The boron atoms are linked in a rigid three dimensional network with metal atoms in large cubo-cctahedral holes. The stability of the structure appears to be a sensitive function of the effective size of the metal atom; it could not be prepared when metal atoms larger than Dy or smaller than Zr were used. Coefficients of thermal expansion of HoB/sub 12/ and of ErB/sub 12/ were measured by x-ray-diffraction methods. (auth)
- Research Organization:
- Polytechnic Inst. of Brooklyn
- NSA Number:
- NSA-15-026031
- OSTI ID:
- 4008291
- Journal Information:
- J. Inorg. & Nuclear Chem., Journal Name: J. Inorg. & Nuclear Chem. Vol. Vol: 18
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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