Effect of the neodymium doping on the magnetic and structural properties of the Sr-hexaferrite obtained by the Pechini method

M.F. Ramírez-Ayala; T.J Pérez-Juache; A.M.  Herrera-González; A. Lobo  Guerrero

doi:10.47566/2022_syv35_1-221201

Authors

M.F. Ramírez-Ayala Autonomous University of the State of Hidalgo https://orcid.org/0000-0002-0705-324X
T.J Pérez-Juache Unidad Morelia del Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro No. 8701, Col. Ex Hacienda de San José de la Huerta, C.P. 58190, Morelia, Michoacán, México.
A.M. Herrera-González Área Académica de Ciencias de la Tierra y Materiales, Universidad Autónoma del Estado de Hidalgo, Carr. Pachuca-Tulancingo Km. 4.5, 42184 Hidalgo, México. https://orcid.org/0000-0002-7534-7004
A. Lobo Guerrero Área Académica de Ciencias de la Tierra y Materiales, Universidad Autónoma del Estado de Hidalgo, Carr. Pachuca-Tulancingo Km. 4.5, 42184 Hidalgo, México. https://orcid.org/0000-0001-5816-847X

DOI:

https://doi.org/10.47566/2022_syv35_1-221201

Keywords:

Strontium hexaferrite, Microstructure, Pechini method, Nd-doping

Abstract

In this work, neodymium (Nd³⁺) doped strontium hexaferrite was obtained using the sol–gel based Pechini method. The cation distribution was modified by doping with different amounts of Nd³⁺ ions when 0.0 ? x ? 0.4 according to the chemical expression Sr_1-xNd_xFe₁₂O₁₉ the powders were sintered at 1100 °C for 1 h. The influence of the neodymium was analyzed, and the magnetic and structural properties have been associated with the fabrication method. The crystalline phases, structure, and particle morphology of the samples were determined by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. In addition, the magnetic properties were measured at room temperature using a vibrating sample magnetometer with an applied field of up to 20 kOe. Moreover, magnetization and coercivity values are influenced by the neodymium content. The results showed that the Pechini sol-gel method allows a limited solubility of the Nd³⁺ ions on the hexaferrite structure.

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