Structural and magnetic properties of Ho-doped CuFe2O4 nanoparticles prepared by a simple co-precipitation method

Keywords: CuFe2O4, Ho-doping, Co-precipitation method, Magnetic properties

Abstract

       Nanocrystalline copper (II) ferrite with a spinel structure doped with holmium was synthesized by co-precipitation using an aqueous solution of NaOH as a precipitant and subsequent annealing at 800°C for 60 min. The doping limit was determined by X-ray phase analysis. The similarity of the real and nominal compositions of the doped samples was established by energy-dispersive X-ray spectroscopy using a scanning electron microscope. The obtained particles had an approximately spherical shape, and their size was 40–70 nm (X-ray phase analysis, transmission electron microscopy). The introduction of Ho3+ cations to х = 0.15 into a CuFe2O4 spinel lattice led to a decrease in the average size of crystallites, an increase in
the coercive force of nanopowders, and a decrease in excess magnetization and saturation magnetization. Synthesized CuFe2-xHoxO4 (х = 0, 0.1 and 0.15) nanopowders were magnetically hard materials with high coercive force.

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Author Biographies

Hoang Bao Khanh, Ho Chi Minh City University of Education, Ho Chi Minh City 700000, Vietnam

3rd year student, Faculty of
Chemistry, Ho Chi Minh City University of Education
(Ho Chi Minh City, Vietnam).

Valentina O. Mittova, Voronezh State Medical University named after N. N. Burdenko, 10 ul. Studencheskaya, Voronezh 394036, Russian Federation

PhD in Biology, Assistant
Professor of Clinical Laboratory Diagnostics
Department, Voronezh State Medical University named
after N. N. Burdenko, Ministry of Health of the Russian
Federation (Voronezh, Russian Federation).

Anh Tien Nguyen, Ho Chi Minh City University of Education, Ho Chi Minh City 700000, Vietnam

PhD in Chemistry, Chief of
Inorganic Chemistry Department, Ho Chi Minh City
University of Education (Ho Chi Minh City, Vietnam).

Pham Thi Hong Duyen, Thu Dau Mot University, Binh Duong Province 590000, Vietnam

Master in Chemistry,
Lecturer of Institute of Applied Technology, Thu Dau
Mot University (Binh Duong Province, Vietnam)

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Published
2022-03-15
How to Cite
Khanh, H. B., Mittova, V. O., Nguyen, A. T., & Duyen, P. T. H. (2022). Structural and magnetic properties of Ho-doped CuFe2O4 nanoparticles prepared by a simple co-precipitation method. Kondensirovannye Sredy I Mezhfaznye Granitsy = Condensed Matter and Interphases, 24(1), 109-115. https://doi.org/10.17308/kcmf.2022.24/9061
Section
Original articles