Chemical synthesis of NdxCo1−xFe2O4 hybrid nanoparticles for permanent magnet applications: structural, magnetic and electrical properties

Saleh M. Matar; Galal H. Ramzy; Muhammad Arif; Ibrahim M. Maafa; Ayman Yousef; Nasser Zouli; Ahmed F. F. Abouatiaa; Abdel Samed M. Adam; Isam Y. Qudsieh; Ahmed I. Ali; Elbadawy A. Kamoun; Amr Ali

doi:10.1039/D5NA00197H

Chemical synthesis of Nd_xCo_1−xFe₂O₄ hybrid nanoparticles for permanent magnet applications: structural, magnetic and electrical properties

Saleh M. Matar,^a Galal H. Ramzy,^b Muhammad Arif,^c Ibrahim M. Maafa,^a Ayman Yousef,^a Nasser Zouli,^a Ahmed F. F. Abouatiaa,^a Abdel Samed M. Adam,^a Isam Y. Qudsieh,^a Ahmed I. Ali,

*^de Elbadawy A. Kamoun

*^fg and Amr Ali^h

Author affiliations

* Corresponding authors

^a Department of Chemical Engineering, College of Engineering and Computer Sciences, Jazan University, Jazan 45142, Saudi Arabia

^b Physics Department, Faculty of Science, Cairo University, Giza, Egypt

^c Department of Applied Physics, Integrated Education Institute for Frontier Science and Technology and Institute of Natural Sciences, Kyung Hee University, Yongin 17104, Republic of Korea

^d Basic Science Department, Faculty of Technology and Education, Helwan University, Saray–El Qoupa, El Sawah Street, 11281 Cairo, Egypt
E-mail: Ahmed_Ali_2010@techedu.helwan.edu.eg

^e Department of Mechanical Engineering (Integrated Engineering Program), Kyung Hee University, 1732 Deogyeong-Daero, Yongin, Gyeonggi, Republic of Korea

^f Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
E-mail: ekamoun@kfu.edu.sa, badawykamoun@yahoo.com

^g Polymeric Materials Research Dep., Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg Al-Arab City 21934, Alexandria, Egypt

^h Production Technology Department, Faculty of Technology & Education, Sohag University, 82524 Sohag, Egypt

Abstract

Nd-doped CoFe₂O₄ spinel ferrites were synthesized via the sol–gel method, confirming a cubic spinel structure. Increasing Nd concentration expanded the lattice parameter (8.3900–8.4231 Å) and unit cell volume while reducing grain size. FT-IR analysis validated the spinel phase. Nd doping enhanced the dielectric constant by affecting space charge polarization and charge hopping, with conductivity following a Debye-type relaxation mechanism. Cole–Cole plots indicated grain boundary effects and polaron hopping conduction. Magnetic properties improved with Nd³⁺ content, with M_s and H_c reaching 5.621 emu g⁻¹ and 143.43 Oe at 4% doping. A transition from an antiferromagnetic to a ferromagnetic state was observed, with a high Curie temperature (T_m) of 292 °C, confirming a stable ferromagnetic phase. These findings highlight Nd-doped CoFe₂O₄ as a promising candidate for permanent magnet applications.

Nanoscale Advances

Chemical synthesis of Nd_xCo_1−xFe₂O₄ hybrid nanoparticles for permanent magnet applications: structural, magnetic and electrical properties

Abstract

Transparent peer review

Article information

Download Citation

Permissions

Chemical synthesis of Nd_xCo_1−xFe₂O₄ hybrid nanoparticles for permanent magnet applications: structural, magnetic and electrical properties

Social activity

Search articles by author

Spotlight

Advertisements