The study of holmium substituted spinel ferrites for high frequency applications

Figures & data

Figure 1. XRD patterns of spinel ferrites (x = 0.00 and 0.10).

Table 1. Different structural parameters of spinel ferrites.

	a	rA	rB	A-O	B-O	LA	LB
Concentration	[Å]	[Å]	[Å]	[Å]	[Å]	[Å]	[Å]	Room Temperature Resistivity [Ω-cm]
x = 0.00	8.310	0.449	0.727	1.799	2.077	3.598	2.938	7.07 × 10^7
x = 0.1	8.334	0.453	0.732	1.803	2.082	3.607	2.945	2.63 × 10^8

Figure 2. FTIR of spinel ferrites (x = 0.00 and 0.10).

Figure 3. SEM of spinel ferrites.

Figure 4. TEM of spinel ferrites.

Figure 5. Variation of dc resistivity of spinel ferrite with temperature.

Figure 6. Variation of dc resistivity of spinel ferrite with 1000/T (K⁻¹).

Figure 7. Variation of dielectric constant of spinel ferrite with frequency at different temperatures (x = 0.10).

Figure 8. Variation of dielectric constant spinel ferrite with temperature at different frequencies (x = 0.1).

Figure 9. Variation of dielectric loss of spinel ferrite with frequency at different temperature (x = 0.1).

Figure 10. Variation of dielectric loss of spinel ferrite with temperature at different frequencies (x = 0.1).

Figure 11. M-H loops of spinel ferrite.