TY - JOUR
T1 - Magnetic and electrical properties of several equiatomic ternary U-compounds
AU - Palstra, T. T.M.
AU - Nieuwenhuys, G.J.
AU - Vlastuin, R.F.M.
AU - van den Berg, J.
AU - Mydosh, J.A.
AU - Buschow, K.H.J.
PY - 1987/1/1
Y1 - 1987/1/1
N2 - Magnetisation, specific heat, electrical resistivity, magnetoresistivity and Hall effect were measured for several equiatomic ternary (1-1-1) intermetallic compounds of formula RTX with R = U, Th, Hf and Ti, T a transition metal (Co, Ni, Ru, Rh, Pd, Ir, Pt and Au), and X = Al, Ga, Sn and Sb. These compounds crystallize in three different crystal structures: the cubic MgAgAs-type, and the hexagonal Fe2P- and CaIn2-types. All U-compounds, which we focus upon in this paper, exhibit magnetic moments of about 3μB/U at high temperature and encompass U-U distances from 3.51 to 4.68 Å. For the compounds which the largest U-U distances, Kondo-lattice behaviour was observed. The specific heat coefficient γ shows typical metallic values with some enhancement. Remarkably these compounds have an electrical resistivity up to three orders of magnitude larger than that expected and usually found for U-based intermetallic compounds. The Hf- and Th-based compounds serve as nonmagnetic reference materials, however, they also exhibit anomalously larger resistivities.
AB - Magnetisation, specific heat, electrical resistivity, magnetoresistivity and Hall effect were measured for several equiatomic ternary (1-1-1) intermetallic compounds of formula RTX with R = U, Th, Hf and Ti, T a transition metal (Co, Ni, Ru, Rh, Pd, Ir, Pt and Au), and X = Al, Ga, Sn and Sb. These compounds crystallize in three different crystal structures: the cubic MgAgAs-type, and the hexagonal Fe2P- and CaIn2-types. All U-compounds, which we focus upon in this paper, exhibit magnetic moments of about 3μB/U at high temperature and encompass U-U distances from 3.51 to 4.68 Å. For the compounds which the largest U-U distances, Kondo-lattice behaviour was observed. The specific heat coefficient γ shows typical metallic values with some enhancement. Remarkably these compounds have an electrical resistivity up to three orders of magnitude larger than that expected and usually found for U-based intermetallic compounds. The Hf- and Th-based compounds serve as nonmagnetic reference materials, however, they also exhibit anomalously larger resistivities.
UR - http://www.scopus.com/inward/record.url?scp=0023382606&partnerID=8YFLogxK
U2 - 10.1016/0304-8853(87)90192-2
DO - 10.1016/0304-8853(87)90192-2
M3 - Article
AN - SCOPUS:0023382606
SN - 0304-8853
VL - 67
SP - 331
EP - 342
JO - Journal of magnetism and magnetic materials
JF - Journal of magnetism and magnetic materials
IS - 3
ER -