Low dimensional systems

Influence of functionalization with citric acid on the properties of magnetic nanoparticles Zn$_x$Fe$_{3-x}$O$_4$ (0 $\ge x\ge$ 1.0)

A. S. Kamzin^a, G. Caliskan^b, N. Dogan^b, A. Bingolbali^c, V. G. Semenov^d, I. V. Buryanenko<sup>e

a</sup> Ioffe Institute, St. Petersburg, Russia
^b Department of Physics, Gebze Technical University, Kocaeli, Turkey
^c Department of Bioengineering, Yildiz Technical University, Istanbul, Turkey
^d Saint Petersburg State University, St. Petersburg, Russia
^e Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia

Abstract: The effect of surface functionalization with citric acid on the properties of magnetic nanoparticles (MNPs) Zn$_x$Fe$_{3-x}$O$_4$ ($x$ = 0; 0.25; 0.5; 0.75; 1.0) synthesized by the hydrothermal method was studied. To study the properties of MNPs, X-ray diffractometry (XRD) and energy dispersive X-ray spectroscopy (EDS) were used. The magnetic properties of the samples and the phase state of MNPs were studied using a physical property measurement system (PPMS) and Mössbauer spectroscopy (MS). It has been established that the sizes of crystallites and the crystal lattice parameter of Zn$_x$Fe$_{3-x}$O$_4$ MNPs change with increasing Zn$^{2+}$ concentration. The low values of the coercive force and the presence of a doublet on the MS indicate the presence of both ferrimagnetic and superparamagnetic components.

Keywords: Zn$_x$Fe$_{3-x}$O$_4$ ferrite spinel MNPs, hydrothermal synthesis, functionalization of MNPs with citric acid, crystal structure, magnetic properties, magnetic structure.

Received: 29.05.2022
Revised: 29.05.2022
Accepted: 30.05.2022

DOI: 10.21883/FTT.2022.10.53107.391

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