Possibility of Magnetocapacitor for Multilayered Thin Films

/Si substratesby using pulsed laser deposition (PLD) system. We fabricated three different thin films of BTO, BTO/CNF andCNF/BTO/CNF for magneto-capacitor and studied their crystalline structure, surface and interface morphol-ogy, and magnetic and electrical properties. When three different structures of multilayered thin film werecompared, magnetization of CNF/BTO/CNF thin films was decreased by magnetic and dielectric interaction.Also we confirmed that capacitance of CNF/BTO/CNF multilayered thin film was enhanced as being near tet-ragonal structure with increasing of c/a ratio because of atomic bonding at interface between BTO dielectricand CNF magnetic materials. Finally, we studied the change of the capacitance of CNF/BTO/CNF multilay-ered thin film with magnetic field for emergence of magnetocapacitance and suggested a possibility of enhancedcapacitance.Keywords : magnetocapacitance, multilayer thin film, pulsed laser deposition, interface effect