Magnetic Behaviour of Iron Oxychloride and Its Organometallic Intercalation Compounds Studied by Möossbauer Spectroscopy

Metallocene intercalate compounds with iron oxychloride, FeOCl(FeCp₂)_0.16 and FeOCl(CoCp₂)_0.36 with Cp being cyclopentadienyl group, are synthesized and characterized. Magnetism and the structure--property relations are investigated by magnetic measurement and ⁵⁷Fe Mössbauer spectroscopy. The results show that the through-space dipolar interactions play a critical role in three-dimensional magnetic ordering of such layered compounds.