In:
Journal of Materials Chemistry C, Royal Society of Chemistry (RSC), Vol. 9, No. 39 ( 2021), p. 13832-13840
Abstract:
In this study, we demonstrate the synthesis and the investigation of the magnetostatic and magnetodynamic properties of single-domain gallium substituted strontium M-type hexaferrite particles SrFe 12− x Ga x O 19 ( x = 1–6). The synthetic approach is based on a precursor preparation via a facile citrate–nitrate auto-combustion method followed by thermal treatment at 1200 °C. The annealing of the porous precursor led to the formation of single-domain hexaferrite particles with mean sizes of 360–560 nm. Introduction of Ga 3+ ions up to x = 4 into the hexaferrite structure resulted in an increase of coercivity from 5.1 to 6.4 kOe, and a further increase in gallium concentration led to a decrease in the coercivity. The samples display natural ferromagnetic resonance frequency in the range of 49–57 GHz. Crystal structure refinement reveals that Ga 3+ ions preferably occupy 2a, 4f 1 , 12k, and 2b sites and cause a decrease in the magnetic anisotropy and a modest decrease in the saturation magnetization.
Type of Medium:
Online Resource
ISSN:
2050-7526
,
2050-7534
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2021
detail.hit.zdb_id:
2702245-6
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