Electron Spin Resonance (ESR) Study of Four Perovskite Layer Compounds [NH3-(CH2)3-COOH]2 CuCl4, [CH3-(CH2)7-NH3]2CuCl4, [NH3-(CH2)8-NH3]CuCl4, AND [NH3-(CH2)10-NH3] CuCl4

J. Aazza, K Elmebrouki, M Khechoubi and A Khmou

Journal of Asian Scientific Research, 2013, vol. 3, issue 11, 1072-1077

Abstract: Perovskite Layer compounds with the general formula (CnH2n+1NH3)2MX4 (CnMX4 for short) or [NH3-(CH2)n-NH3] MX4 (Short notation 2CnMX4) where M is a divalent metal atom and X an halogen (M = Cu, Mn, Zn, Co, Cd…) (X = Cl, Br…) are lamellar type structures and typical “Sandwich” system because of the regular alternation of inorganic and hydrocarbon regions that consist of long chain alkylammonium groups ionically bonded to an inorganic support. Perovskite Layer compounds are Phase Change Material which have solid-solid transitions and thermal properties good for Thermal Energy Storage. Electron Spin Resonance (ESR) study was done to some of the perovskite layers that we have synthesized. It shows a Ferromagnetic Resonance line (FMR) that split into two overlapped spectral lines for 2C8CuCl4. The observed splitting of the FMR signal has been observed in other layered compounds.

Keywords: Perovskite layer; ESR; Ferromagnetic; Thermal energy storage. (search for similar items in EconPapers)
Date: 2013
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