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Study of CeNi4Mn by neutron diffraction |
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| Authors: | Indu Dhiman S.K. Dhar Surjeet Singh P. Manfrinetti |
| Affiliation: | a Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India b Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Colaba, Mumbai 400005, India c Dipartimento di Chimica, Laboratorio LAMIA-CNR-INFM, Università di Genova, Via Dodecaneso 31, 16146 Genova, Italy |
| Abstract: | We report neutron diffraction measurements on CeNi4Mn, which has recently been identified as a soft ferromagnet  with a sizeable spin-transport polarization. Our data show conclusively that the Mn atoms occupy a unique site (4c) in the unit cell, which has the symmetry of the cubic MgCu4Sn-type structure. We infer a moment of 4.6 μB on Mn at 17 K, which is oriented ferromagnetically along the {101} plane. The amplitude of the Mn vibrational motion is found to be larger than that of Ce and Ni atoms at all temperatures, thereby lending support to theoretical prediction of rattling phonon modes in this compound. |
| Keywords: | 61.12.Ld 75.25.+z 75.50.Cc |
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