Facile Synthesis of Chromium-Doped Fe1.1Mn1.9O4 Nanoparticles and the Effect of Cr Content on Their Magnetic and Structural Properties

Aleksandr A Spivakov; Li-Huai Huang; Ying-Zhen Chen; Chun-Rong Lin

doi:10.3390/nano13152203

Facile Synthesis of Chromium-Doped Fe_1.1Mn_1.9O₄ Nanoparticles and the Effect of Cr Content on Their Magnetic and Structural Properties

Nanomaterials (Basel). 2023 Jul 29;13(15):2203. doi: 10.3390/nano13152203.

Authors

Aleksandr A Spivakov¹, Li-Huai Huang¹, Ying-Zhen Chen¹, Chun-Rong Lin¹

Affiliation

¹ Department of Applied Physics, National Pingtung University, No. 4-18 Minsheng Rd., Pingtung County, Pingtung City 90003, Taiwan.

Abstract

In the present study, Fe_1.1(Cr_xMn_1-x)_1.9O₄ nanoparticles (0 ≤ x ≤ 0.5) were successfully synthesized by a combustion method, and the influence of Cr substitution on the structural and magnetic properties of the obtained nanoparticles was studied by various methods. The structural analysis revealed that the sample with x = 0 has a tetragonal structure, while all Cr-doped samples crystallize into a cubic structure. Additionally, the results of TEM show that doping with chromium leads to an increase in particle size. The magnetic hysteresis loops demonstrate the behavior typical for soft magnetic materials with low coercivity and remanence magnetization. The magnetic measurements revealed that the saturation magnetization of the obtained nanoparticles demonstrates a decreasing trend with increasing Cr content. The influence of chromium doping on the observation change in saturation magnetization is discussed. Based on the results of temperature-dependent magnetization measurements, it was found that the temperature of a magnetic transition in synthesized nanoparticles depends on Cr content.

Keywords: Fe1.1Mn1.9O4 nanoparticles; chromium doping; combustion method; high-temperature magnetic measurements; magnetic properties; spinel ferrites.

Abstract

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