A REVIEW OF THE RARE-EARTH HYDRIDES

Author: Mulford, R. N. R.
Published: United States : [publisher not identified], 1950.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1950.
Physical Description: microopaque : positive ; 8 x 13 cm

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Summary

Some of the properties of rare earth hydrides are reviewed. Information on the hydrides of Tm, Lu, Tb, and Ho is not included because no work has been done on these elements. Eu and Yb are different from other rare earths in that MH/sub 2/ is their highest hydride and the crystal structures of EuH/sub 2/ and YbH/sub 2/ are orthorhombic. ra, Ce, Pr, and Nd form a dihydride which will take hydrogen into solid solution up to MH/sub 3/ without a change in crystal structure. The heavy rare earths form the same type of dihydride as the light, but as the hydrogen content increases from MH/sub 2/ the cubic structure becomes unstable and is replaced by a hexagonal structare. With increasing atomic number, thermal stability and hydrogen deusity increase. (J.R.D.)

Report Numbers

AECU-3813

Other Subject(s)

Collection

U.S. Atomic Energy Commission depository collection.

Note

DOE contract number: W-7405-ENG-36
NSA number: NSA-12-016288
OSTI Identifier 4310778
Research organization: Los Alamos Scientific Lab., N. Mex.

Funding Information