CAVALCANTE, F.H.M.CARBONARI, A.W.SAXENA, R.N.MESTNIK FILHO, J.2014-07-152014-07-302014-07-152014-07-302005CAVALCANTE, F.H.M.; CARBONARI, A.W.; SAXENA, R.N.; MESTNIK FILHO, J. Temperature dependence of the magnetic hyperfine field at sup(140)Ce on Gd sites in GdAg compound. <b>Hyperfine Interactions</b>, v. 158, n. 1-4, p. 125-129, 2005. DOI: <a href="https://dx.doi.org/10.1007/s10751-005-9020-8">10.1007/s10751-005-9020-8</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/5528.0304-3843http://repositorio.ipen.br/handle/123456789/5528Perturbed gammaYgamma angular correlation technique was used to measure the magnetic hyperfine field at Gd sites in the intermetallic compound GdAg using the 140LaY140Ce nuclear probe. A major and well-defined magnetic interaction is observed at 140Ce substituting Gd sites in GdAg below 130 K, corresponding to a ferromagnetic ordering of Gd moments. The temperature dependence of magnetic hyperfine field, however, shows a sharp deviation from an expected Brillouin-like behavior for temperatures below 75 K. This additional magnetic interaction is believed to result from the polarization of Ce spin moments induced by the magnetic field from Gd atoms.125-129openAccesscerium 140perturbed angular correlationspectroscopymagnetic fieldshyperfine structuretemperature dependencerare earthsintermetallic compoundsgadoliniumsilverpolarizationArtigo de periódico1-415810.1007/s10751-005-9020-8https://orcid.org/0000-0002-4499-5949