| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1607956 | Journal of Alloys and Compounds | 2016 | 7 Pages |
•We re-examine the magnetic and structural properties of Tb2Fe2Si2C.•Tb2Fe2Si2C orders antiferromagnetically below TN = 44(2) K with k = [0, 0, ½].•The Fe atom carries no magnetic moment as seen from the 57Fe Mössbauer spectra.•Strong magnetoelastic effects below TN is observed.
The structural and magnetic properties of Tb2Fe2Si2C have been investigated by bulk measurements (magnetisation and specific heat), X-ray diffraction, neutron powder diffraction and 57Fe Mössbauer spectroscopy over the temperature range 3 K–300 K Tb2Fe2Si2C is antiferromagnetic with a Néel temperature TN of 44(2) K. The magnetic structure can be described with a propagation vector k = [0 0 12] with the Tb magnetic moments ordering along the b-axis. We also observed strong magnetoelastic effects in particular along the a- and c-axes associated with the antiferromagnetic transition. The 57Fe Mössbauer spectra show no evidence of magnetic splitting down to 10 K, indicating that the Fe atom is non-magnetic in Tb2Fe2Si2C.
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