Spin density wave in (FexV3−x)S4 and the coexistence of normal and condensate states: A Mössbauer study

Autor: B.P. Embaid, F. Gonzalez-Jimenez
Rok vydání: 2013
Předmět:
Zdroj: Journal of Magnetism and Magnetic Materials. 330:134-140
ISSN: 0304-8853
DOI: 10.1016/j.jmmm.2012.10.030
Popis: Iron–vanadium sulfides of the monoclinic system Fe x V 3− x S 4 (1.0≤ x ≤2.0) have been investigated by 57 Fe Mossbauer Spectroscopy in the temperature range 30–300 K. Incommensurate spin density waves (SDW) have been found in this system. An alternative treatment of the spectra allows a direct measurement of the temperature evolution of condensate density of the SDW state which follows the Maki–Virosztek formula. For composition ( x =1.0) the SDW condensate is unpinned while for compositions ( x >1.0) the SDW condensate is pinned. Possible causes of the pinning–unpinning SDW will be discussed.
Databáze: OpenAIRE