Impact of sonochemical synthesis condition on the structural and physical properties of MnFe2O4 spinel ferrite nanoparticles

Raghvendra Singh Yadav; Ivo Kuřitka; Jarmila Vilcakova; Thaiskang Jamatia; Michal Machovsky; David Skoda; Pavel Urbánek; Milan Masař; Michal Urbánek; Lukas Kalina; Jaromir Havlica

doi:10.1016/j.ultsonch.2019.104839

Impact of sonochemical synthesis condition on the structural and physical properties of MnFe₂O₄ spinel ferrite nanoparticles

Ultrason Sonochem. 2020 Mar:61:104839. doi: 10.1016/j.ultsonch.2019.104839. Epub 2019 Oct 23.

Affiliations

¹ Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida Tomase Bati 5678, 760 01 Zlín, Czech Republic. Electronic address: yadav@utb.cz.
² Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida Tomase Bati 5678, 760 01 Zlín, Czech Republic.
³ Materials Research Centre, Brno University of Technology, Purkyňova 464/118, 61200 Brno, Czech Republic.

PMID: 31683238
DOI: 10.1016/j.ultsonch.2019.104839

Abstract

Herein, we report sonochemical synthesis of MnFe₂O₄ spinel ferrite nanoparticles using UZ SONOPULS HD 2070 Ultrasonic homogenizer (frequency: 20 kHz and power: 70 W). The sonication time and percentage amplitude of ultrasonic power input cause appreciable changes in the structural, cation distribution and physical properties of MnFe₂O₄ nanoparticles. The average crystallite size of synthesized MnFe₂O₄ nanoparticles was increased with increase of sonication time and percentage amplitude of ultrasonic power input. The occupational formula by X-ray photoelectron spectroscopy for prepared spinel ferrite nanoparticles was (Mn_0.29Fe_0.42)[Mn_0.71Fe_1.58]O₄ and (Mn_0.28Fe_0.54) [Mn_0.72Fe_1.46]O₄ at sonication time 20 min and 80 min, respectively. The value of the saturation magnetization was increased from 1.9 emu/g to 52.5 emu/g with increase of sonication time 20 min to 80 min at constant 50% amplitude of ultrasonic power input, whereas, it was increased from 30.2 emu/g to 59.4 emu/g with increase of the percentage amplitude of ultrasonic power input at constant sonication time 60 min. The highest value of dielectric constant (ε') was 499 at 1 kHz for nanoparticles at sonication time 20 min, whereas, ac conductivity was 368 × 10^-9 S/cm at 1 kHz for spinel ferrite nanoparticles at sonication time 20 min. The demonstrated controllable physical characteristics over sonication time and percentage amplitude of ultrasonic power input are a key step to design spinel ferrite material of desired properties for specific application. The investigation of microwave operating frequency suggest that these prepared spinel ferrite nanoparticles are potential candidate for fabrication of devices at high frequency applications.

Keywords: Electrical property; Magnetic property; Nanoparticles; Sonochemical synthesis; Spinel ferrite.