HYPERFINE INTERACTIONS FOR IMPURITY TIN ATOMS IN UCUGEстатья
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Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
Местоположение издательства:Road Town, United Kingdom
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Аннотация:Hyperfine interactions for Sn-119 atoms are studied in a UCuGe antiferromagnet. Mossbauer absorption spectra are measured in the temperature range 5 - 293 K. At 5 K, the hyperfine magnetic field is B = +/- (62 +/- 2) kOe and the isomeric shift is delta = 1.94 +/- 0.06 mm/s. At 293 K, the electric quadrupole constant is found to de e(2)qQ = +/- (1.14 +/- 0.12) mm/s. In the temperature range 5 - 35 K, the local magnetic structure of this intermetallic compound remains unchanged, and the mean quadrupole shift amounts to 0.15 +/- 0.02 mm/s. This value corresponds to an angle of theta = 35 +/- 5 or 90 +/- 10 degrees between the directions of the hyperfine magnetic field B and the gradient of the electric field.