Analysis of crystal structure and magnetic properties of strontium substituted bismuth ferrite thin films. (23rd September 2020)

• Record Type: Journal Article
• Authors: Pani, Tapan Kumar; Sundaray, Bibekananda
• Is Part Of: Journal of physics. Volume 32:Number 50(2020)
• Publication Date: 2020-09-23
• Subjects: bismuth ferrite -- grain boundaries -- x-ray methods -- magnetic properties; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/abb1cd
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: Thin films of Bi(1− x ) Sr x FeO3 ( X = 0.00, 0.05, 0.10, 0.20, and 0.30) are synthesized on ultra-cleaned glass substrates by simple spray pyrolysis method at 550 °C. The crystal structures of the thin films are investigated by x-ray diffraction (XRD). The Rietveld refinement data for all the thin films are confirmed a single-phase ABO3 type of rhombohedral structure belonging to the R 3 c space group. The field emission scanning electron microscopy (FESEM) analysis reveals the size of grains from hexagonal to spherical shape with the addition of Sr doping. The vibrational modes are studied by Raman spectroscopy. The x-ray photoelectron spectroscopy (XPS) analysis unravels the influence of Sr 2+ in the creation of Fe 2+ defects and oxygen vacancies. The room temperature magnetic measurements of the thin films are carried out within a magnetic field range of ±10 kOe. Magnetic hysteresis loop confirms a significant increase in magnetization in Sr modified bismuth ferrite thin films. The composition i.e. X = 0.20 shows maximum enhancement of magnetic properties with saturation and Remanent magnetization values of 5.99 emu g −1 and 1.77 emu g −1, respectively.