Influence of Dy3+ Ions on the Microstructures and Magnetic, Electrical, and Microwave Properties of [Ni0.4Cu0.2Zn0.4](Fe2- x Dy x )O4 (0.00 ≤ x ≤ 0.04) Spinel Ferrites

Munirah Abdullah Almessiere; Yassine Slimani; Hakan Güngüneş; Ayse Demir Korkmaz; Tatiana Zubar; Sergei Trukhanov; Alex Trukhanov; Ayyar Manikandan; Fatimah Alahmari; Abdulhadi Baykal

doi:10.1021/acsomega.1c00611

Influence of Dy³⁺ Ions on the Microstructures and Magnetic, Electrical, and Microwave Properties of [Ni_0.4Cu_0.2Zn_0.4](Fe_{2- x} Dy _x )O₄ (0.00 ≤ x ≤ 0.04) Spinel Ferrites

ACS Omega. 2021 Apr 8;6(15):10266-10280. doi: 10.1021/acsomega.1c00611. eCollection 2021 Apr 20.

Authors

Affiliations

¹ Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia.
² Department of Physics, Hitit University, Çevre Yolu Bulvarı-Çorum 19030, Turkey.
³ Department of Chemistry, Istanbul Medeniyet University, Dumlupınar D100 Karayolu No: 98, Uskudar-Istanbul 34700, Turkey.
⁴ Laboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, Brovki 19, Minsk 220072, Belarus.
⁵ Laboratory of Single Crystal Growth, South Ural State University, Lenina Avenue 76, Chelyabinsk 454080, Russia.
⁶ Department of Chemistry, Bharath Institute of Higher Education and Research (BIHER), Bharath University, 173, Agaram Main Road, Selaiyur, Chennai 600073, India.
⁷ Department of Nanomedicine, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia.

Abstract

[Ni_0.4Cu_0.2Zn_0.4](Fe_2-x Dy _x )O₄ spinel ferrite nanoparticles with different Dy³⁺ concentrations (0.00 ≤ x ≤ 0.04) were prepared by a citrate sol-gel auto-combustion technique. A strong correlation among Dy concentration, structural parameters, and magnetic, electrical, and microwave properties was established. An increase in the Dy³⁺ concentration is the reason for a rise in the crystal structure parameters (due to different ionic radii of Fe and Dy ions) and a slight increase in the average particle size with a minor reduction in the specific surface area. It was observed that Dy³⁺ ions prefer to occupy the octahedral B site due to their large ionic radius (0.91 Å). The explanation of the electrical and magnetic properties was given in terms of the features of Dy³⁺-O^2--Fe³⁺ dysprosium-oxygen-iron indirect exchange. The occurrence of the intensive changes in amplitude-frequency characteristics was observed from 1.6 to 2.7 GHz. The explanation of electromagnetic absorption was given in terms of the peculiarities of the microstructure (resonance of domain boundaries). The results open perspectives in the utilization of [Ni_0.4Cu_0.2Zn_0.4](Fe_2-x Dy _x )O₄ spinel ferrite nanoparticles as functional materials for targeted drug delivery and hyperthermia applications.