Magnetic Properties of TlCo2Se2 Studied by Mössbauer Spectroscopy

The quasi two-dimensional antiferromagnetic compound TlCo2Se2 has been studied by 57Fe Mössbauer spectroscopy. Small single crystals have been made with 2% Fe doping. The Mössbauer spectrum, developed below the Néel temperature of 85 K, reveals a distribution of magnetic hyperfine fields (MHF). The...

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Bibliographic Details
Published in:Hyperfine interactions 2004, Vol.156-157 (1-4), p.315-319
Main Authors: Kamali Saeed, Häggström Lennart, Ronneteg Sabina, Berger, Rolf
Format: Article
Language:English
Subjects:
Antiferromagnetism
Crystals
Hyperfine structure
Iron 57
Magnetic properties
Magnetic structure
Mossbauer spectroscopy
Neel temperature
Neutron diffraction
Neutrons
Single crystals
Spectroscopic analysis
Spectrum analysis
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Summary:The quasi two-dimensional antiferromagnetic compound TlCo2Se2 has been studied by 57Fe Mössbauer spectroscopy. Small single crystals have been made with 2% Fe doping. The Mössbauer spectrum, developed below the Néel temperature of 85 K, reveals a distribution of magnetic hyperfine fields (MHF). The fit is reasonably good if we suppose a connection between the values and mutual orientation of the EFG and MHF. That allows us to suggest the existence of a modulation in the helical magnetic structure, discovered earlier by neutron diffraction.
ISSN:0304-3843
1572-9540
1572-9540
DOI:10.1023/B:HYPE.0000043247.17411.d2