Optical, X-Ray Diffraction, and Magnetic Properties of the Cobalt-Substituted Nickel Chromium Ferrites (CrCo_𝑥Ni_1−𝑥FeO₄, 𝑥=0,0.2,0.4,0.6,0.8,1.0) Synthesized Using Sol-Gel Autocombustion Method

Figure 4

B-H loops of some typical CrCo_𝑥Ni_1−𝑥FeO₄ ferrites annealed at 1000°C.