Bi_1-xSm_xFeO₃ (BSFO, x = 0, 0.05, 0.10, 0.15, 0.20) nanoparticles were prepared through tartaric acid-modified sol-gel technique. X-ray diffraction and scanning electron microscopy provide phase purity and nanocrystalline behavior (29–92) nm of pristine and doped BFO nanoparticles. The crystallite sizes of the studied samples ranged from 19.64 nm to 12.26 nm. The Rietveld refinement of XRD data demonstrated a good configuration of change in the crystalline structure. Structural phase analysis by XRD suggested that structural transformation from rhombohedral structure (R3c space group) to orthorhombic structure (Pnma space group) is observed in Sm substituted BFO nanoparticles. The ferromagnetic properties increase up to x = 15 % in the samples with enhancing magnetization. A large component of the orthorhombic phase for x = 20 % sample results from a drastic decrease in the ferromagnetic property due to collinear antiferromagnetic ordering correlated with VSM and EPR studies.

Bi _1-x Sm _x FeO ₃(BSFO, x = 0, 0.05, 0.10, 0.15, 0.20) 纳米颗粒是通过酒石酸改性的溶胶-凝胶技术制备的。X 射线衍射和扫描电子显微镜提供原始和掺杂 BFO 纳米粒子的相纯度和纳米晶行为 (29-92) nm。所研究样品的微晶尺寸范围为 19.64 nm 至 12.26 nm。XRD 数据的 Rietveld 精修证明了晶体结构变化的良好配置。XRD 的结构相分析表明，在 Sm 取代的 BFO 纳米粒子中观察到从菱面体结构（R3c 空间群）到正交结构（Pnma 空间群）的结构转变。随着磁化强度的提高，样品中的铁磁特性增加到 x = 15%。