Comprehensive analysis of sm-substituted CoFe₂O₄ nanoferrites: Structural insights and functional applications

Samarium-doped nanocrystalline cobalt ferrites with the chemical formula CoFe2-xSmxO4 were synthesized using the sol-gel auto-combustion method. The as-prepared samples were characterized by PXRD to confirm the spinel ferrite phase, and the average crystallite size was 10–20 nm. X-ray peak profile analysis models revealed that the gradual decrement of the induced micro-strain led to a low crystallite size with samarium ions. The characteristic vibrational band of the CoFe2-xSmxO4 samples observed by FTIR spectroscopy at 548.5 cm-1 confirmed the inverse spinel structure. The theoretical approach for UV-Visible spectrophotometer data indicates semiconductor characteristics. The micrographs of the sintered samples were examined using FESEM, and quantitative analysis was performed using EDXS. The VSM at room temperature revealed a gradual decrease in the magnetic anisotropy constant (K), retentivity (Mr), squareness ratio (SQR), and saturation magnetization (Ms) for all samples, but the coe..., The data were collected as part of an experimental effort to characterize the CoFe2-xSmxO4 (0.00≤x≤0.25) samples. Powder X-ray diffraction (XRD) analysis was employed to examine the phase and crystal structure. Which also provides the information about Estimation of interatomic spacing (d), lattice constant (a), crystallite size (D), and microstructural components, Scherrer’s equation (SCR), Modified Williamson-Hall (mW-H) method, Size-strain plot, Cationic distribution & Tolerance factor (τ). Fourier Transform Infrared Spectroscopy (FTIR) provided information on the functional groups and chemical bonding. UV-Vis spectroscopy was conducted to study the semiconductor characteristics of CoFe2-xSmxO4 samples. Field Emission Scanning Electron Microscopy was employed to examine the morphology and grain size of the samples. The elemental compositions of the samples were determined by EDAX analysis. The magnetic characteristics were studied using Vibrating Sample Magnetometer (VSM) data a..., # Data from: Comprehensive Structural properties of CoFe2-xSmxO4 nanocrystalline ferrites for potential functional applications

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1\. Samarium-doped nanocrystalline cobalt ferrites (CoFe~2-x~Sm~x~O~4~) successfully synthesized by the sol-gel autocombustion method.

2.The inverse spinel structure and phase of the as-prepared samples have been systematically evaluated by X-ray peak profile analysis models.

3.Shifting frequency of molecular bonds for all the samples were examined at stretching or bending vibrations.

4.Semiconductor nature of prepared samples noticed by using a common theoretical approach

5.The variation of M~s~ along with H~c~ has been observed while increasing Sm^3+^ concentration.

There is little literature survey on rare earth (RE) ion-sm^3+^ doped nanocrystalline cobalt ferrites in which outstanding samarium can alter the structural, vibrational and magnetic properties of cobalt ferrites.  This research study explores the ..., ,