Preparation and Physical Properties of Fe"xTaS"2 (0.15 x 〉= 0.50) Compounds - Narita, H.; Ikuta, H.; Hinode, H.; Uchida, T.; Ohtani, T.; Wakihara, M. (Elsevier)
The intercalation compounds of the Fe-Ta-S system were synthesized by beating the mixture of 1T-TaS"2 and metal Fe in a sealed evacuated silica tube, The single phase region was 0.15 x 〉= 0.50 in Fe"xTaS"2. The hexagonal a-axis was almost constant, while the c-axis increased simply with increasing iron content x . Temperature dependence of electrical resistivity showed metallic behavior. Mossbauer effect measurements showed that the iron was high-spin state Fc^2^+ in Fe"xTaS"2. The temperature variation of magnetic susceptibility obeyed a Curie-Weiss law, The Weiss temperature θ decreased with x and changed the value from positive to negative at x ~ 0.4 suggesting the change of exchange interactions from ferromagnetic to antiferromagnetic.
http://dx.doi.org/10.1006/jssc.1994.1022
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