Influence of High Temperature on the Crystal Structure of SrFe₁₂O₁₉ Nanoparticle

Table 1

Calculated parameters from XRD diffraction data for strontium hexaferrite nanoparticles annealed at 1,000 and 1,300°C.

Annealed temperature (°C)	Lattice parameter a (Å)	Lattice parameter c (Å)	c/a	Vcell (nm^3)  10^−3	Dav (nm)	Dx (g/cm^3)	Db (g/cm^3)	P (%)	SSA (m^2/g)	δ (nm^−2)	ε
1,000	5.865	23.083	3.935	687.6	33.98	5.11	0.28	94	34.56	0.00087	0.003
1,300	5.865	23.083	3.935	687.06	41.48	5.11	0.53	90	28.31	0.00058	0.0031