TY  - JOUR
AU  - Staun Olsen, J.
AU  - Gerward, L.
AU  - Benedict, U.
AU  - Itié, J.-P.
AU  - Richter, K.
TI  - High-pressure structural studies of UC by x-ray diffraction and synchrotron radiation
JO  - Journal of the less common metals
VL  - 121
SN  - 0022-5088
CY  - Amsterdam [u.a.]
PB  - Elsevier
M1  - PUBDB-2017-03149
SP  - 445 - 453
PY  - 1986
N1  - Hasylab
AB  - High-pressure v-ray diffraction studies have been performed on UC powder for pressures up to 46 GPa using a diamond anvil cell and synchrotron radiation. The low-pressure phase is of NaCl type with the lattice constant a0 = 4.9606(5) Å at ambient pressure. The best values of the bulk modulus and its pressure gradient are B0= 160(4) GPa and B'0 = 3.6(5) respectively. A transformation to a new phase, UC II, has been found at about 27 GPa. The diffraction lines from the high-pressure phase can be indeved using a pseudo-body-centred orthorhombic unit cell, which is a distortion of the body-centred tetragonal unit cell of the f.c.c. lattice. The lattice constants at 33.6 GPa are a = 3.043(10) Å, b = 3.518(6) Å and c = 4.730(7) Å. The evperimental evuation of state has been compared with the results of theoretical calculations.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:00
DO  - DOI:10.1016/0022-5088(86)90561-8
UR  - https://bib-pubdb1.desy.de/record/322418
ER  -