Role of strain and nanoscale defects in modifying the multiferroicity in nanostructured BiFeO₃films

Abstract

BiFeO 3 (BFO) multifunctional oxide exhibits fascinating multiferroic properties suitable for potential application in nanoscale electronic devices such as nonvolatile random accesses memory (FeRAM), field effect transistors, capacitors, logic circuits, etc. In this communication, we report the results of studies on 200 MeV Ag C15 ion irradiation-induced modifications in the structural, microstructural, electrical (IÀV, CÀV and PÀE) and magnetic properties of pulsed laser deposited nanostructured BFO films grown on conducting SrTi 0.998 O 0.002 TiO 3 (SNTO) substrates. Role of nanoscale structural defects and oxygen vacancies in modifying the physical properties of BFO/SNTO has been discussed in this work.

Work Function Modulation of Molybdenum Disulfide Nanosheets by Introducing Systematic Lattice Strain

“…Similarly, one can expect the modification of WF by introducing lattice strain in MoS 2 nanosheets. Strain induced structural modification in bulk and nanomaterials using swift heavy ion (SHI) has been reported in literature 16 . SHI irradiation is one of the established methods to modify the optical, electrical and structural properties of nanostructured materials and nanocomposites thin films via defect creation 17 – 20 .…”

Structural, optical, and dielectric characteristics of pulsed laser deposited SnO2-TiO2 composite thin films

“…These measurements have an error of less than 2%. The SN00 thin film has a higher carrier concentration of 7.66 × 10 19 (cm −3 ) and a higher conductivity of 82.41 (cm) −1 than the composite film because SN00 has a smaller crystallite size and thus more oxygen vacancies at their boundaries act as donors, resulting in a higher free charge carrier density of SN00 nanoparticles that promotes conduction than the SN25 lattice [39,40]. These findings are useful in determining their applications in transparent conducting electrodes and gas sensors [41].…”