Specific heat and resistivity of (U, Th)Pt3

✍ Scribed by K. Kadowaki; M. Van Sprang; J.C.P. Klaasse; A.A. Menovsky; J.J.M. Franse; S.B. Woods

• Publisher: Elsevier Science
• Year: 1987
• Weight: 304 KB
• Volume: 148
• Category: Article
• ISSN: 0378-4363
• DOI: 10.1016/0378-4363(87)90148-3

✦ Synopsis

The magnetic field dependence of the specific heat and the electrical resistivity and its pressure dependence have been investigated for the heavy-fermion compounds U 1 ThxPt 3. With increasing Th concentration, the coefficient of the electronic specific heat, C~ T, is further enhanced. Antiferromagnetic instabilities occur in a narrow concentration range of Th (0.01 < x < 0.10). This antiferromagnetic state does not destroy the heavy-fermion state but coexists with it. Strong influences of magnetic field and pressure on the antiferromagnetic state indicate that the magnetic order is induced by a very delicate balance of electronic states at the Fermi surface. At higher Th concentration, a Kondo-type of resistivity curves are observed.