Hexaferrites of the X-type, incorporating substitutions of samarium-cadmium and characterized by the formula Ba2-xSmxCo2CdyFe28-yO46 (with x ranging from 0.00 to 0.08, and y from 0 to 0.4), were created through a straightforward heat treatment at 1340 °C. An array of analytical methods, including FTIR, XRD, SEM, VSM, Mӧssbauer, and low-frequency dielectric measurements, were employed to comprehensively examine the heated samples. The XRD analysis indicated the predominant presence of the X-phase along with hematite in the prepared samples. The saturation magnetization (MS) values ranged from 67.01 Am2/kg to 50.43 Am2/kg, while coercivity (Hc) values varied between 2.95 kA/m and 6.17 kA/m. The pure sample displayed a notably high MS value (67.01 Am2/kg), and the composition with x = 0.06, y = 0.3 exhibited a remarkably low Hc value (2.95 kA/m). However, confirming a Mr/Ms ratio below 0.5 affirmed the multi-domain nature of the synthesized hexaferrites. The hysteresis loops of all samples were narrow, confirming their categorization as magnetically soft materials. The Mössbauer spectra of selected samples (S1, S3, and S5) indicated the presence of doublets. The considerably reduced values of coercivity, retentivity, and loss tangent in samarium-cadmium substituted samples suggest their potential suitability in the design of electromagnets, transformer cores, electric motors, and as promising candidates for lossless low-frequency applications.
DOI : Article Influence of Sm and Cd co-substitutions on physical, magneti...
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