Novel Spinel Li–Cr Nano-Ferrites: Structure, Morphology, and Electrical/Dielectric Properties
Mataev M. Madiyarova A. Abdraimova M. Nurbekova M. Seibekova K. Tursyn Z. Kezdykbayeva A. Ramachandran K. Keskin B.
November 2025Multidisciplinary Digital Publishing Institute (MDPI)
International Journal of Molecular Sciences
2025#26Issue 21
This article reports on the synthesis and physicochemical characterization of a novel complex ferrite material, LiCr3.4Fe1.6O8, prepared via the sol-gel method. X-ray diffraction (XRD) analysis confirmed that the synthesized compound is a single-phase material with a spinel-type structure and cubic symmetry. Raman spectroscopy was employed to investigate the vibrational modes, and the observed peaks corresponding to Fe–O and Cr–O bonds further validated the spinel-like structure of the compound. The microstructure and elemental composition were examined using scanning electron microscopy (SEM). Multiple regions of the LiCr3.4Fe1.6O8 crystals were analyzed, revealing a homogeneous phase and providing detailed insight into the morphology and chemical composition of the surface. The synthesized ferrite particles exhibited relatively large dimensions, with sizes measured at approximately 5, 30, 100, and 200 μm. The dielectric behavior was studied to assess the material’s response to an external electric field, demonstrating its capacity for electric charge polarization. Both capacitance and electrical conductivity were found to increase with rising temperature. Electrophysical measurements were conducted using the LCR-800 system over a temperature range of 293–483 K and at frequencies of 1.5 kHz and 10 kHz. An increase in frequency to 10 kHz resulted in a decrease in the dielectric constant (ε) across the entire temperature range.
ferrites , pycnometric density , scanning electron microscope , sol-gel method , symmetry , unit cell parameters , X-ray diffraction
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Department of Chemistry, Faculty of Natural Sciences, Kazakh State Women’s Teacher Training University, Almaty, 050000, Kazakhstan
Departments of Inorganic and Technical Chemistry, Faculty of Chemistry, E.A. Buketov Karaganda State University, Karagandy, 100024, Kazakhstan
Department of Physics, SRM Institute of Science and Technology, Vadapalani Campus, Chennai, 600026, India
Department of Chemistry, Faculty of Arts & Science, Yildiz Technical University, Istanbul, TR34220, Turkey
Department of Chemistry
Departments of Inorganic and Technical Chemistry
Department of Physics
Department of Chemistry
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