Mössbauer study of crystallographic and magnetic phase transitions, phonon softening, and hyperfine interactions in Zr(AlxFe1-x)2.
作者： I. Nowik , I. Jacob , R. Moreh
关键词: Crystallography 、 Mössbauer spectroscopy 、 Paramagnetism 、 Quadrupole 、 Phonon 、 Materials science 、 Laves phase 、 Magnetic phase 、 Hyperfine structure 、 Softening
摘要: Mossbauer-spectroscopy studies of 57 Fe in Zr(Al x 1-x ) 2 (x=0-0.825) at various temperatures, from 90 to 612 K have been performed. For x<0.25 the systems are cubic Laves phase structure and order magnetically above room temperature. Above x=0.25 a hexagonal do not K. The Mossbauer spectra paramagnetic state all very well described by model that assumes isomer shift quadrupole interaction linearly dependent on number Al first-nearest neighbors iron nucleus (0.056 mm/s -7% per neighbor, respectively)
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