Magnetic field at 140Ce in Dy sites in DyX compounds studied by perturbed angular correlation spectroscopy

Magnetic hyperfine field at highly diluted Ce impurities in the antiferromagnetic compound GdRh2Si2 studied by perturbed gamma–gamma angular correlation spectroscopy

“…[11]. In this model the effective hyperfine field at the probe site is given by B hf = B i hf + B h hf , where B i hf is the contribution from the probe ion itself, and B h hf is the contribution from the polarization of conduction electrons by the magnetic field of rare-earth ions of the host, which scales with the host reduced magnetization.…”

“…Using a model based on molecular field theory [11] with some modifications [12], we have calculated the two contributions to the mhf: from the probe ions themselves and that from the magnetic Gd ions of the host matrix. The results are compared to those obtained from the fit to the temperature dependence of mhf at diluted 140 Ce probes in pure Gd with T C = 293 K [8] and GdAg with T N = 132 K [13] reported previously.…”

Temperature dependence of the magnetic hyperfine field at cerium impurity in Co

“…detail in reference [9], the parameter ξ takes into account the fact that the hostimpurity exchange may be different form the host-host exchange.…”

Magnetic hyperfine field at Nd sites in NdAg studied by perturbed angular correlation spectroscopy and ab-initio calculations

“…Therefore, x ¼ 1 means that both interactions are equal. The results of the fitting show that this interaction (x ¼ 0:21) is much weaker than that previously reported for DyAg (x ¼ 0:78) [18]. One direct explanation would be that this magnetic interaction is directly proportional to the localized magnetic moment at the magnetic ion of the host, m ¼ 9:7m B [19] for DyAg and m ¼ 2:19m B [3] for NdAg.…”