Bauer, E., R. Hauser, A. Galatanu, A. Lindbaum, G. Hilscher, H. Sassik, H. Kirchmayr, J. G. Sereni, and P. Rogl. "New phase boundary between magnetic and nonFermiliquid in Ce(Rh1xRux)(3)B2, for 0 <= x <= 0.4." Journal of Applied Physics 83, no. 11 (1998): 6423–6425.
Abstract: A study of the temperaturedependent magnetic susceptibility and electrical resistivity rho(T) (0.5300 K) on singlephase alloys (CaCu5 type), prepared by argon are melting, reveals a magnetic phase transition with a nonmonotonous decrease of the ordering temperature from Tc = 115 K for x = 0 to Tc approximate to 0 for x = 0.40. A kink in the susceptibility at about 70 K indicates that ferromagnetism (at x < 0.1) transforms to a complex magnetic order for 0.125 less than or equal to x less than or equal to 0.35. Above that concentration rho(T) = rho(0) + AT(n) changes from n approximate to 2 to n approximate to 1.5, a characteristic for nonFermiliquid behavior. Under pressure Tc stays almost constant for x = 0.125 but dT(c)/dp grows with increasing Ru content. On the contrary, applied fields up to 12 T do not affect Tc. Lowtemperature specific heat and ac susceptibility for x = 0.40 confirm the absence of longrange magnetic order down to 0.5 K, For x = 0.35 Cp/T = 62 mJ/mol K at 1.5 K, a value which is three times larger than that of CeRh3B2. (C) 1998 American Insitute of Physics. [S00218979(98)465113].
