Abstract
We report the temperature dependence of the gamma-ray anisotropies from oriented160Tb nuclei produced by neutron activation of the central portion of a high-purity single crystal Tb slab. The magnetically saturated sample was studied over a wide temperature range from 18 mK to 150 mK. The temperatures were determined using precision resistance thermometry within situ calibration by a magnetically shielded six-element superconducting fixed point device. Temperature stability during data acquisition was better than 0.1%, and least-squares fitting of the resulting temperature dependences of 0° and 90° anisotropies allowed both the magnetic dipole and the electric quadrupole hyperfine interaction frequencies to be determined with good accuracy. The weighted averages for 18 gamma rays arev M=1393.8 (8.1) MHz andv P=178.0 (2.1) MHz, in excellent agreement with NMR results on ion-implanted samples.
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References
B. Bleaney, in:Magnetic Properties of Rare Earth Metals, ed. R.J. Elliott (Plenum Press, London, 1972) p. 383.
W.D. Brewer and E. Wehmeier, Phys. Rev. B12 (1975) 4608; J. Boysen, J. Grimm, A. Kettschau, W.D. Brewer and G.V.H. Wilson, Phys. Rev. B35 (1987) 1500.
K. Kroth, W. Thomas, D. Mertin and M. Forker, Hyp. Int. 2 (1976) 206; Z. Phys. B27 (1977) 241; M. Forker, R. Trzcinski and T. Merzhaeuser, Hyp. Int. 15/16 (1983) 273; B. Perscheid and M. Forker, Z. Phys. B31 (1978) 49.
N. Sano and J. Itoh, J. Phys. Soc. Jpn. 32 (1972) 95.
W.D. Brewer, P. Roman, M. Böttcher, B. Illerhaus, H. Marshak, K. Freitag and P. Herzog, Phys. Rev. B (in press).
H. Marshak, W.D. Brewer, P. Roman and M. Böttcher, Jpn. J. Appl. Phys. 26, Suppl. 26-3 (1987) CQ14.
P. Roman, W.D. Brewer, E. Klein, H. Marshak, K. Freitag and P. Herzog, Phys. Rev. Lett. 56 (1986) 1976; H. Marshak, W.D. Brewer, P. Roman, E. Klein, K. Freitag and P. Herzog, Phys. Rev. Lett. 59 (1987) 1764.
N.J. Stone, Hyp. Int. 2 (1976) 45; Hyp. Int. 8 (1980) 83.
H. Marshak, W.D. Brewer and P. Roman, Phys. Rev. C, to be submitted.
G. Eska and C. Neumaier, Cryogenics 23 (1983) 84.
G.W. Phillips and K.W. Marlow, Nucl. Instr. Meth. (1976) 525.
K.F. Krane, in:Low Temperature Nuclear Orientation, eds. N.J. Stone and H. Postma (North-Holland, Amsterdam, 1986) p. 31.
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Brewer, W.D., Roman, P. & Marshak, H. Precision nuclear orientation measurements for determining mixed magnetic dipole/electric quadrupole hyperfine interactions. Hyperfine Interact 51, 1129–1137 (1989). https://doi.org/10.1007/BF02407838
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DOI: https://doi.org/10.1007/BF02407838