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Author  |
Bauer, E.; Hauser, R.; Galatanu, A.; Lindbaum, A.; Hilscher, G.; Sassik, H.; Kirchmayr, H.; Sereni, J.G.; Rogl, P. |
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Title |
New phase boundary between magnetic and non-Fermi-liquid in Ce(Rh1-xRux)(3)B-2, for 0 <= x <= 0.4 |
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Year |
1998 |
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Journal of Applied Physics |
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J. Appl. Phys. |
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83 |
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11 |
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6423-6425 |
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A study of the temperature-dependent magnetic susceptibility and electrical resistivity rho(T) (0.5-300 K) on single-phase alloys (CaCu5 type), prepared by argon are melting, reveals a magnetic phase transition with a nonmonotonous decrease of the ordering temperature from T-c = 115 K for x = 0 to T-c 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 non-Fermi-liquid behavior. Under pressure T-c 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 T-c. 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 C-p/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. [S0021-8979(98)46511-3]. |
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0021-8979 |
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ISI:000077795500066 |
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BT @ hernan @ |
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84 |
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