Preparation and characterization of Y-Fe-Al garnet nanostructured materials

Nikoletta Molnár, Gyula Tolnai, Sándor Mészáros, Erika Kálmán

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Aluminium doped yttrium-iron garnet (YIG) nanoparticles (Y 3AlxFe5-xO12, x = 0, 1,5, 1,55, 1,575, 1,6) have been prepared by the nitrate-citrate sol-gel auto-combustion method (NCSAM). Our goal was to prepare YIG nanopowders with different aluminium content, furthermore to investigate the variation of the Curie temperature of the samples in function of the amount of dopant cations. The crystalline phase attributes, microstructure, morphology, surface area, Curie temperature (T C) and permeability of the sintered powders were characterized using X-ray diffraction spectroscopy (XRD), scanning electron microscopy (SEM), surface area measurement (BET) and ac magnetic permeability with frequency shift. The results show, that the sintered powders exhibit a spongy-like morphology with relatively high surface area. Furthermore it has been confirmed, that the ac magnetic permeabilities are strongly depending on the chemical composition.

Original languageEnglish
Title of host publicationColloids for Nano- and Biotechnology
EditorsZoltan Horvolgyi, Eva Kiss
Pages44-47
Number of pages4
DOIs
Publication statusPublished - Dec 1 2008

Publication series

NameProgress in Colloid and Polymer Science
Volume135
ISSN (Print)0340-255X

Keywords

  • Ceramics
  • Nanoparticles
  • Self-combustion
  • Sol-gel
  • Yttrium-aluminium-iron garnet

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

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  • Cite this

    Molnár, N., Tolnai, G., Mészáros, S., & Kálmán, E. (2008). Preparation and characterization of Y-Fe-Al garnet nanostructured materials. In Z. Horvolgyi, & E. Kiss (Eds.), Colloids for Nano- and Biotechnology (pp. 44-47). (Progress in Colloid and Polymer Science; Vol. 135). https://doi.org/10.1007/2882-2008-100