Lattice location and magnetism of Fe and Sc impurities in Gd and Tb single crystals

摘要: Abstract We used the in-beam TD perturbed angular distribution (PAD) technique to investigate magnetism and lattice location of dilute impurities Sc Fe implanted into single-crystal Gd Tb host lattices. is observed implant on a unique site, which almost certainly substitutional. The T = 0 hyperfine field B hf (0) found be −5.22(1) in −3.91(3) host, both values being corrected for demagnetizing Lorentz fields. At higher temperatures, fields deviate from magnetization M(B,T) ; local susceptibilities however follow Curie-Weiss laws similar those hosts. onto two sites, can identified by comparison with Y as substitutional interstitial sites. are small positive but distinctly larger site. Again, behavior up 500 K signals unobservable below C , probably owing line broadening.