ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
A study of the temperature-dependent magnetic susceptibility and electrical resistivity ρ(T) (0.5–300 K) on single-phase alloys (CaCu5 type), prepared by argon arc melting, reveals a magnetic phase transition with a nonmonotonous decrease of the ordering temperature from Tc=115 K for x=0 to Tc(approximate)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≤x≤0.35. Above that concentration ρ(T)=ρ0+ATn changes from n(approximate)2 to n(approximate)1.5, a characteristic for non-Fermi-liquid behavior. Under pressure Tc stays almost constant for x=0.125 but dTc/dp grows with increasing Ru content. On the contrary, applied fields up to 12 T do not affect Tc. Low-temperature specific heat and ac susceptibility for x=0.40 confirm the absence of long-range 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. © 1998 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.367805
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