Ni-doped SnO₂ (Sn_1−xNi_xO, x = 0.03, 0.05, 0.10, 0.12, and 0.15) powder samples were synthesized in a chemical auto combustion method and followed by calcination at 850 ºC for 5 h. Initially, their structural characteristics were investigated through X-ray diffraction (XRD) which reveals that the prepared samples are nanocrystalline rutile tetragonal structure similar to host SnO₂. The surface morphological image analyses were done by scanning electron microscopy (SEM) which revealed the spherical nature of grains along with the presence of voids. From Raman spectroscopy study, the presence of fundamental vibration modes of SnO₂ like $A_{1g}$ modes at 634 cm⁻¹, B_2g modes at 773 cm⁻¹ and E_g modes at 473 cm⁻¹ along with the formation of defects i.e. oxygen vacancies in the sample have been confirmed. Similarly, Fourier transforms infrared spectroscopy (FTIR) shows the prominent peaks of Sn-O and Sn-O-Sn vibrations around 560 cm⁻¹and 615 cm⁻¹ respectively, and confirms the incorporation of Ni ions into pure SnO₂ lattice by the small shifting in the positions of the peaks. Furthermore, from UV–visible spectroscopy, the decrease of bandgap with increasing Ni concentration has been noticed. The existence of room temperature ferromagnetism in Ni-doped SnO₂ nanoparticles has been confirmed from the hysteresis loop of the vibrating sample magnetometer measurement (VSM) measurement. From all the above characterizations, it has been confirmed that up to x = 0.12 of Ni has been incorporated into host material SnO₂.

Ni 掺杂的 SnO ₂（Sn _1-x Ni _x O，x = 0.03、0.05、0.10、0.12 和 0.15）粉末样品在化学自动燃烧方法中合成，然后在 850 ºC 下煅烧 5 小时。最初，通过 X 射线衍射 (XRD) 研究了它们的结构特征，表明制备的样品是类似于主体 SnO _{2 的}纳米晶金红石四方结构。表面形态图像分析是通过扫描电子显微镜 (SEM) 进行的，它揭示了晶粒的球形特性以及空隙的存在。从拉曼光谱研究，SnO ₂的基本振动模式的存在，如${\mathrm{一种}}_{1G}$在634厘米模式^-1，乙_2克模式在773厘米^-1和Ë_克模式在473厘米^-1与缺陷的形成，即沿该样品中的氧空位已被确认。类似地，傅里叶变换红外光谱 (FTIR) 显示 Sn-O 和 Sn-O-Sn 振动的显着峰分别位于 560 cm ^-1和 615 cm ^{-1 附近}，并证实 Ni 离子掺入纯 SnO ₂通过峰位置的小幅移动而形成晶格。此外，从紫外 - 可见光谱，已经注意到带隙随着 Ni 浓度的增加而减小。从振动样品磁强计测量 (VSM) 测量的磁滞回线已经证实了在 Ni 掺杂的 SnO ₂纳米粒子中存在室温铁磁性。从所有上述特征中，已经证实高达 x = 0.12 的 Ni 已被结合到主体材料 SnO _{2 中}。