Colossal dielectric and room temperature ferromagnetic response in CCoTO delafossite type nanostructure

Delafossite type CuCo0.5Ti0.5O2 (CCoTO) nanostructure has been synthesized via a low temperature modified chemical synthesis technique. X-ray diffractogram reveals the crystallinity and phases of synthesized CuCo0.5Ti0.5O2 nanomaterial, consisting of two polytype, 2H and 3R. Surface morphology and information about structure and phase of CuCo0.5Ti0.5O2 nanostructure has been studied by FESEM and HRTEM analysis. Thermal analysis shows the decomposition behavior and stability over the observed temperature range. On application of external electric field, CuCo0.5Ti0.5O2 nanostructures calcined at 250 degrees C and 400 degrees C attain a dielectric constant of similar to 41,000 and similar to 22,500 at 40 Hz frequency respectively which attains very good stability over 40 Hz to 1 MHz frequency range. Internal barrier layer capacitor (IBLC) model and impedance spectroscopy has been used to analyze the occurrence of giant dielectric response. From vibrating sample magnetometer (VSM) analysis it can be confirmed that, under the influence of external applied magnetic field at room temperature all the synthesized CuCo0.5Ti0.5O2 nanostructures are ferromagnetic in nature. Thus, the synthesized magneto-dielectric CCoTO nanostructure can be used in microstructure device, barrier layer capacitor, spinotmnic device fabrication and also a promising candidate material for future many other electronic industrial applications.