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Study of Microstructure and Magnetic Properties of SrM Hexaferrites with Neodymium Oxide

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Abstract

In this work, we report a systematic study on the microstructure and magnetic properties of isotropic M-type SrNd x Fe12−x O19 hexaferrites (x=0.0, 0.1, 0.2, 0.3, 0.4, 0.5) obtained by conventional ceramic process. According to DRX analysis, a solid solution is formed for Nd contents up to x=0.1, while a composite Sr(NdFe)12O19/SrFeO3 microstructure results for x>0.1. Interesting combinations of hard magnetic properties were obtained for the whole compositional series including increasing coercivity values (up to 329 kA/m for x=0.5) with increasing Nd concentration, together with high Curie temperatures (around 731 K). Results are interpreted in terms of the Nd incorporation into the unit cell as well as within the frame of the nucleation controlled mechanism as the coercivity source for this kind of materials.

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Authors and Affiliations

  1. Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, Av. Salvador Nava Martínez S/N Zona Universitaria, San Luis Potosí, SLP, CP 78294, Mexico

    T. J. Pérez-Juache & S. A. Palomares-Sánchez

  2. Departamento de Materiales Metálicos y Cerámicos, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, México D.F., 04510, México

    I. Betancourt

  3. Instituto de Física, Universidad Autónoma de San Luis Potosí, Av. Dr. Nava S/N, Zona Universitaria, 78290, San Luis Potosí, SLP, México

    M. Mirabal García

  4. Centro de Investigación en Materiales Avanzados, Chihuahua, Chih., México

    J. A. Matutes-Aquino & A. L. Guerrero-Serrano

Authors
  1. T. J. Pérez-Juache
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  2. I. Betancourt
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  3. S. A. Palomares-Sánchez
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  4. M. Mirabal García
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  5. J. A. Matutes-Aquino
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  6. A. L. Guerrero-Serrano
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Correspondence to T. J. Pérez-Juache.

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Pérez-Juache, T.J., Betancourt, I., Palomares-Sánchez, S.A. et al. Study of Microstructure and Magnetic Properties of SrM Hexaferrites with Neodymium Oxide. J Supercond Nov Magn 24, 2325–2329 (2011). https://doi.org/10.1007/s10948-011-1193-6

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  • DOI: https://doi.org/10.1007/s10948-011-1193-6

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