MAGNETIC AND ELECTRONIC-PROPERTIES OF TERNARY URANIUM ANTIMONIDES UTSB2 (T = 3D-ELECTRON, 4D-ELECTRON, 5D-ELECTRON TRANSITION-METAL)

Magnetic, electrical transport, neutron diffraction, and Mossbauer mea surements have been performed on a series of uranium-transition-metal- antimonides UTSb2 (T=Fe, Co, Ni, Cu, Ru, Pd, Ag, and Au). Most of thes e compounds were found to order magnetically at low temperatures and c haracterized as semimetallic Kondo lattices with strongly screened mag netic moments. Combined neutron diffraction and Mossbauer results allo wed determination of the magnetic structures adopted in antiferromagne tic UNiSb2, UPdSb2, and URuSb2. The magnetic behavior found in UTSb2 p hases is here discussed with a special emphasis on the role of the f-p and f-d hybridization. [S0163-1829(98)00538-4].