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Hyperfine splitting of terbium in

1996; IOP Publishing; Volume: 8; Issue: 8 Linguagem: Inglês

10.1088/0953-8984/8/8/016

1361-648X

Y Li, R.G. Graham, J.W. Ross, M A H McCausland, D St P Bunbury, Lei Cao, Lin-shu Kong, Bao-gen Shen,

Rare-earth and actinide compounds

We have studied the zero-field hyperfine splitting of in ferrimagnetic (x = 1, 1.5, 2) using spin-echo NMR at 4.2 K. Distinct spectra arising from the different sites characterized by the numbers of carbon nearest neighbours (NN = 0, 1, 2, 3) are observed. The measured hyperfine parameters and for all four spectra are given for x = 1.5 and 2. Analysis of the quadrupolar splitting indicates that in the dominant contribution to the magnetocrystalline anisotropy arises from the NN = 3 sites.