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

Study of the magnetic properties of GdZn compound using PAC spectroscopy with 140Ce and 111Cd as probe nuclei

“…2b), which could not be fitted by a Brillouin function. Previous works where the temperature dependence of B hf was also measured with 140 Ce probe nuclei have also shown quite similar behavior [5][6][7]. The measured magnetic hyperfine field at 10 K is B hf = 100.3 T. Kasamatsu et al [8] measured the MHF for GdZn and GdCd compounds with NMR measurements.…”

The effect of hybridization on local magnetic interactions at highly diluted Ce ions in tetragonal intermetallic compounds RERh2Si2(RE=Ce, Pr, Nd, Gd, Tb, Dy)

“…Similar behaviour of the temperature dependence of magnetic hyperfine field was observed in transition-metal impurities in transition-metal hosts, such as 99 Ru in Ni [10], s-p impurities in transition-metal hosts, for instance 119 Sn in Co [11], rare-earth impurities in transition-metal hosts, such as 169 Tm in Fe [12] and 140 Ce in Co [58], and rare-earth impurities in rare-earth hosts, for instance 140 Ce in Gd [13]. More recently, this phenomenon was also observed at rare-earth impurities in rare-earth magnetic compounds: 169 Tm in TmFe 2 [59], 140 Ce in RAg [16,60,57] and 140 Ce in CeMn 2 Ge 2 [15]. The investigation of this phenomenon in magnetic compounds has advantages because it is possible to separately study the influence of one specific parameter by varying the composition of the compound within the same crystalline structure.…”

“…This behaviour is a consequence of the strong interaction between the magnetic ions of the host and the 4f electron of the Ce impurity [19], which is polarized by the exchange field of the host [15]. A simple model based on the molecular-field theory, first proposed by Jaccarino et al [9] and modified to apply to the case of Ce impurities in rare-earth based magnetic compounds [57,19], can be used to quantitatively describe the behaviour of the temperature dependence of B hf . In this model the hyperfine field at the probe site is given by B hf = B i + B h , where B i is the contribution from the impurity ion, which is the 140 Ce probe in the present case, and B h is the contribution from the magnetic field of rare-earth ions of the host, which scales with the host reduced magnetization σ (T).…”

Impurities in Magnetic Materials Studied by PAC Spectroscopy

“…These compounds have a simple CsCltype cubic structure which allows a closer insight in to the 4f magnetism. DyAg and DyCu [40], as well as NdAg [41] were investigated by PAC spectroscopy using 140 Ce as probe nuclei. As can be seen in Fig.…”