JOSE MESTNIK FILHO
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Artigo IPEN-doc 21733 A method to determine contributions to the hyperfine field at Ce probes in magnetic host: Application to Ce impurities at RE sites in REAg (RE=Gd, Tb, Dy, Ho) compounds2016 - CAVALCANTE, F.H.M.; PEREIRA, L.F.D.; CARBONARI, A.W.; MESTNIK-FILHO, J.; SAXENA, R.N.Artigo IPEN-doc 21223 Charge distribution and hyperfine interactions in the vicinity of impurity sites in Insub(2)Osub(3) doped with Fe, Co and Ni2015 - SENA, C.; COSTA, M.S.; MUNOZ, E.L.; CABRERA PASCA, G.A.; PEREIRA, L.F.D.; MESTNIK FILHO, J.; CARBONARI, A.W.; COAQUIRA, J.A.H.Resumo IPEN-doc 05059 Magnetic hyperfine field at Hf site in Hf(Fe sub(1-x)Co sub(x))sub(2) and Hf(Fesub(1-x)Cosub(x))sub(2) Hsub (y) at low Co concentration1997 - CARBONARI, A.W.; MESTNIK FILHO, J.; SAXENA, R.N.Resumo IPEN-doc 04754 Investigacao de um novo tipo de ferromagnetismo metalico fraco pela tecnica de correlacao angular perturbada1996 - CARBONARI, A.W.; MESTNIK FILHO, J.; SAXENA, R.N.Resumo IPEN-doc 02885 Campo hiperfino magnetico nas ligas de Heusler Cosub(2)Ysup(1)sub(x)Ysup(2)sub (1-x)Z(Y=Ti,V,Nb,Cr; Z=Al,Sn)1996 - PENDL JUNIOR, W.; CARBONARI, A.W.; SAXENA, R.N.; MESTNIK FILHO, J.; SCHAF, J.Resumo IPEN-doc 08931 Hyperfine magnetic fields investigation in CeInsub(3)2001 - CARBONARI, A.W.; MESTNIK FILHO, J.; SAXENA, R.N.; LALIC, M.V.; SAITOVITCH, H.; SILVA, P.R.J.Artigo IPEN-doc 10576 Study of magnetism in GDTIN(T=NI,PD,CU) compounds by perturbed gamma-gamma angular correlation spectroscopy2005 - LEITE, D.M.T.; LAPOLLI, A.L.; CARBONARI, A.W.; SAXENA, R.N.; MESTNIK FILHO, J.Artigo IPEN-doc 10586 Determinacao do campo hiperfino magnetico em nucleos de sup(148)Ce substituindo Gd em GdAg por electroscopia de correlacao angular perturbada2005 - PEREIRA, L.F.D.; MESTNIK FILHO, J.; CAVALCANTE, F.H.M.; CARBONARI, A.W.Artigo IPEN-doc 16267 Magnetic field at sup(140)Ce in Dy sites in DyX (X=Cu, Ag) compounds studied by perturbed angular correlation spectroscopy2007 - CARBONARI, A.W.; CAVALCANTE, F.H.M.; PEREIRA, L.F.D.; CABRERA PASCA, G.A.; MESTNIK FILHO, J.; SAXENA, R.N.Artigo IPEN-doc 10786 Investigation of the local magnetism at rare-earth sites in RAg(R=rare-earth) intermetallic compounds using perturbed gamma-gamma angular correlation spectroscopy2005 - CAVALCANTE, F.H.M.; CARBONARI, A.W.; MESTNIK FILHO, J.; PEREIRA, L.F.D.; SAXENA, R.N.; OLIVEIRA, A.J.A.; SOUZA, P.E.N.; SANTOS, A.O.Time differential perturbed gamma-gamma angular correlation (TDPAC) technique was used to measure the magnetic hyperfine field (mhf) at rare earth sites in intermetallic compounds RAg (R = Dy, Gd, Ho, Nd, Tb) in order to study the behavior of the mhf with 4f-electron density variation. 140Ce was used as probe nuclei in the TDPAC measurements, which was carried out in the temperature range of 10 K to 300 K. The results of the temperature dependence of the mhf show a standard antiferromagnetic behavior below the magnetic order temperature but, for lower temperatures, it was observed a sharp deviation from the expected Brillouin-like behavior with an increase of the mhf values. The values of the mhf for each compound at the lowest temperature just above the deviation were compared to the respective projection of the rare-earth spin on the total angular momentum J. The results showed to follow a similar behavior when compared to those for the magnetic moment of the compounds.