Ni/Zn ratio and La substitution effect on selected structural and magnetic properties of NiZn ferrites

Martin Šoka; Mariana Ušáková; Rastislav Dosoudil; Vladimír Jančárik; Elemír Ušák; Edmund Dobročka

doi:10.1088/1361-648X/ad3791

Ni/Zn ratio and La substitution effect on selected structural and magnetic properties of NiZn ferrites

J Phys Condens Matter. 2024 Apr 4;36(26). doi: 10.1088/1361-648X/ad3791.

Authors

Martin Šoka¹, Mariana Ušáková¹, Rastislav Dosoudil¹, Vladimír Jančárik¹, Elemír Ušák¹, Edmund Dobročka²

Affiliations

¹ Institute of Electrical Engineering, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, 841 04 Bratislava, Slovakia.
² Institute of Electrical Engineering, Slovak Academy of Sciences, 841 04 Bratislava, Slovakia.

PMID: 38527370
DOI: 10.1088/1361-648X/ad3791

Abstract

Auto-combustion process was used for synthetization of Ni_1-xZn_xFe₂O₄and Ni_1-xZn_xLa_0.02Fe_1.98O₄(x= 0, 0.3, 0.5, 0.64 and 0.7) ferrite samples to investigate their structural and selected magnetic properties. Standard characterization method such as x-ray diffraction, magnetic susceptibility temperature dependencies measurement, low-frequency hysteresis loops recording and complex permeability spectra were used on the research samples. The monophasic ferrite compounds have been prepared. For all samples, with an increase of zinc ions in the content, a decrease of the Curie temperature and coercive field value and an increase of the complex permeability real part value were observed, together with a shift of the ferrimagnetic resonance frequency value to lower ones. Substituted samples showed some differences, such as slightly higher values of the Curie temperature and coercive field, and at the same time slightly lower values of the complex permeability real part and higher values of the ferrimagnetic resonance frequency.

Keywords: Curie temperature; NiZn ferrites; XRD; magnetization; permeability.