Pressure effects on the magnetic susceptibility of FeTex (...)

The magnetic susceptibility [Formulae and/or non-USASCII text omitted] of FeTe sub(x) compounds ([Formulae and/or non-USASCII text omitted]) was studied under hydrostatic pressure up to 2 kbar at fixed temperatures of 55, 78 and 300 K. Measurements were taken both for polycrystalline and single crys...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2011-08, Vol.23 (32), p.1-7
Main Authors: Fedorchenko, A V, Grechnev, G E, Desnenko, V A, Panfilov, A S, Gnatchenko, S L, Tsurkan, V, Deisenhofer, J, Loidl, A, Volkova, O S, Vasiliev, A N
Format: Article
Language:English
Subjects:
Approximation
Band structure of solids
Condensed matter
Density
Magnetic permeability
Magnetic susceptibility
Mathematical analysis
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Summary:The magnetic susceptibility [Formulae and/or non-USASCII text omitted] of FeTe sub(x) compounds ([Formulae and/or non-USASCII text omitted]) was studied under hydrostatic pressure up to 2 kbar at fixed temperatures of 55, 78 and 300 K. Measurements were taken both for polycrystalline and single crystalline samples. At ambient pressure, with decreasing temperature a drastic drop in [Formulae and/or non-USASCII text omitted](T) was confirmed at [Formulae and/or non-USASCII text omitted] K, which appears to be closely related to antiferromagnetic ordering. The obtained results have revealed a puzzling growth of susceptibility under pressure, and this effect is enhanced by lowering the temperature. To shed light on the pressure effects in the magnetic properties of FeTe, ab initio calculations of its volume dependent band structure and the exchange enhanced paramagnetic susceptibility were performed within the local spin density approximation.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/23/32/325701