FeCr2O4 Multiferroic Spinel's Synthesis and Single Crystal Growth by Floating Zone Technique: Its Structure, Composition, and Magnetic PropertiesAuthor(s): James Martin
In order to guarantee its single phase and close to optimal composition, we report the novel spinel structure FeCr2O4 synthesis root and its single crystal development via the optical floating zone technique. The advantage of the suggested method of synthesis is the production of the reducing environment required for maintaining the Fe2+ oxidation state in the oven through the breakdown of the iron (II) oxalate FeCr2O4 utilized as one of the starting components. Mössbauer spectroscopy was used to closely track the presence of Fe3+ ions in both the generated single crystals and the resulting polycrystalline samples. The temperature dependences of magnetic susceptibility and heat capacity show a series of the structural (138K) and magnetic (at 65K and 38K) phase transition properties for the compound FeCr2O4.