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 1

X-ray diffraction patterns of CrCo_0.6Ni_0.4FeO₄ (a) as obtained and annealed at (b) 400, (c) 600, (d) 800, and (e) 1000°C.