Hetal Kundalia, Ashish Ravalia, Ramcharan Meena, K. Asokan, Brinda Vyas, D. G. Kuberkar
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Interface-Induced Modifications in the Ferroelectric properties of 200 MeV Ag+15 Ion-Irradiated ZnO-BaTiO3 Nanocomposite Films
Studies on nanocomposite films with an optimized composition of 0.6ZnO-0.4BaTiO3/Al2O3 were carried out to understand the effect of swift heavy ion (SHI)-induced modifications on the ferroelectric properties inspired by interface mixing. XRD measurements showed the presence of ZnO and BaTiO3 phases in pristine film which was modified by irradiation. Surface modifications induced by SHI irradiation, as studied using AFM, revealed the evolution of nanosized rod and hillock-like microstructure on the film surface with the increase in irradiation dose. The variations in film thickness and elemental compositions were studied using RBS spectrometry, and an intermixing zone ~ 25 nm was identified in the film irradiated by 5 × 1010 ions/cm2 which increased with the ion fluence. Ferroelectric (P-E) loops showed a significant change in the hysteresis characteristics which was understood on the basis of modifications in the surface morphology and the interface between the wurtzite-structured ZnO and the perovskite-structured BaTiO3 responsible for the space charge region.
期刊介绍：
The Journal of Electronic Materials (JEM) reports monthly on the science and technology of electronic materials, while examining new applications for semiconductors, magnetic alloys, dielectrics, nanoscale materials, and photonic materials. The journal welcomes articles on methods for preparing and evaluating the chemical, physical, electronic, and optical properties of these materials. Specific areas of interest are materials for state-of-the-art transistors, nanotechnology, electronic packaging, detectors, emitters, metallization, superconductivity, and energy applications.
Review papers on current topics enable individuals in the field of electronics to keep abreast of activities in areas peripheral to their own. JEM also selects papers from conferences such as the Electronic Materials Conference, the U.S. Workshop on the Physics and Chemistry of II-VI Materials, and the International Conference on Thermoelectrics. It benefits both specialists and non-specialists in the electronic materials field.
A journal of The Minerals, Metals & Materials Society.
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