Study Of The Magnetic And Calorimetric Properties Of (u1-xrx)cu5al (r=la And Y)

We have investigated the magnetic and thermodynamic properties of the (U1-xRx)Cu5Al (R=La and Y) series. The results show a quick decrease of TN for both La and Y substitutions. For the Y series with concentration between 0.3≤x≤0.4, the temperature dependence of the specific heat and magnetic susceptibility below 10 K are consistent with a non-Fermi-liquid regime. © 2009 Elsevier B.V. All rights reserved.4041931763178Troc, R., Tran, V.H., Wolcyrz, M., André, G., Bourée, F., (1998) J. Magn. Magn. Mater., 190, p. 251Tran, V.H., Troć, R., Stepień-Damm, J., Komatsubara, T., Steglich, F., Hauser, R., Bauer, E., (2002) Phys. Rev. B, 66, p. 54421Chełkowska, G., Morkowski, J.A., Szajek, A., Troć, R., (2001) Phys. Rev. B, 64, p. 75119Troc, R., Kaczorowski, D., Tran, V.H., Zaremba, V.I., (1999) Physica B, 259-261, p. 233Rojas, D.P., Medina, A.N., da Silva, L.M., Gandra, F.G., (2004) J. Magn. Magn. Mater., 272-276, pp. e11Stewart, G.R., (2001) Rev. Mod. Phys., 73, p. 797Castro Neto, A.H., Castilla, G., Jones, B.A., (1998) Phys. Rev. Lett., 81, p. 353