The magnetic properties of strontium hexaferrites with La–Cu substitution prepared by SHS method

Effect of Al–Cr doping on the structural, magnetic and dielectric properties of strontium hexaferrite nanomaterials

“…Various researchers doped different metals and combinations of various metal cations to improve the properties of strontium hexaferrites and to make the materials suitable for different applications [6][7][8][9][10][11][12][13][14][15]. In the present work, we have selected the binary mixture of Al 3 + and Cr 3 + to improve the dielectric properties of the strontium hexaferrite nanomaterials because the materials with high electrical resistivity and low dielectric constant value are more suitable for microwave devices [16].…”

Structural and magnetic properties of SrFe12O19 hexaferrite synthesized by a modified chemical co-precipitation method

“…1 by Collomb et al [15]. Because the magnetic properties of SrFe 12 O 19 strongly depend on the size and shape of the particles [16,17], several routes have been used to prepare strontium ferrite, including the traditional sol-gel process [18,19], the solid-state method [17,20], the saltmelting method [21], ball milling [22,23], self-propagating hightemperature synthesis [24], and the chemical co-precipitation method [25].…”

Cu-substituted barium hexaferrite crystal growth and characterization

“…In case of simultaneous Cu-and Ti-substitution, a weak increase of M s was reported for a comparably small degree of substitution (BaFe 12-2x Cu x Ti x O 19 with x < 0.3) [4,[22][23][24]. It has been reported that, like Co 2+ ions, Cu 2+ preferably occupies the 4f 2 site (octahedrally coordinated position), which is a down-spin state contributing negatively to the total saturation magnetization [10,[25][26]. The radius of Fe 3+ in octahedral coordination (0.67 Å) is smaller than that of Cu 2+ (0.78 Å).…”