Effects of NaOH Concentration and Temperature on Microstructures and Magnetic Properties of Bismuth Ferrite (BiFeO₃) Nanoparticles Synthesized by Coprecipitation Method

Abstract

Bismuth ferrite (BiFeO3) nanoparticles has been synthesized by coprecipitation method with various NaOH concentration (4, 6, 8, and 10 M) and temperature (RT, 60, 80, and 100 C). X-ray diffraction patterns showed the emergence of Bi(OH)3 and Bi25FeO40 structures with crystallite size in the range of 15.1 nm to 35.6 nm. The particles sample was agglomerated. Hysterisis loop showed the linear M–H loops behaviour with no magnetization saturation in 15 kOe maximum field applied which indicates the antiferromagnetic properties. The coercivity field tends to increase by the increasing of the NaOH concentration and synthesis temperature. In addition, the annealing treatment could leads the increasing of coercivity fields while decreasing the magnetization of BFO sampel.

Microstructural, optical, and magnetic properties and specific absorption rate of bismuth ferrite/SiO2 nanoparticles

“…Na 2 SiO 3 is inexpensive, non-toxic, environmentally friendly, and water soluble. Sulistiani et al [29] studied the microstructural and magnetic properties of Bi 25 FeO 40 nanoparticles using the coprecipitation method. However, they produced Bi 25 FeO 40 nanoparticles without surface encapsulation.…”

Microwave-Irradiation-Assisted Synthesis of Bismuth Ferrite Nanoparticles: Investigating Fuel-to-Oxidant Ratios

“…Hence, the scientific significance of BiFeO 3 is firmly rooted in the relentless pursuit of advancing our comprehension of these multifunctional nanoparticles and harnessing their capabilities for theoretical and practical advancements in numerous research arenas [15,16]. The synthesis of BiFeO 3 nanoparticles encompasses an array of techniques, including solid-state reactions [17], coprecipitation [18], the wet chemical route [19], microemulsion technique [20], the hydrothermal route [21], the sol-gel process [22], the auto-combustion route [23], sono-synthesis [24], the Pechini method [25], microwave methods [26], and others [27]. These techniques have been meticulously scrutinized and enhanced to produce BiFeO 3 nanostructures with tailored properties suited for diverse applications.…”

Microstructures, Magnetic Properties and Specific Absorption Rate of Polymer-Modified Bismuth Ferrite Nanoparticles

“…The Addition of PEG in the synthesis of bismuth ferrite can affect the crystalline phase, morphology, magnetic properties, and band gap energy of bismuth ferrite [16]. The effect of NaOH concentration and temperature on microstructure and magnetic properties of bismuth ferrite nanoparticles was reported [17]. Bi25FeO40 nanoparticles, modified their surfaces with PEG, are still rarely worked.…”