Abstract Bi(Ti1/2Ni1/2)O3-modified Bi1/2Na1/2TiO3 materials were synthesized by using simple sol-gel route method. The X-ray diffraction and Raman scattering spectra indicated that the Bi(Ti1/2Ni1/2)O3 materials formed a solid solution with Bi(Ti1/2Ni1/2)O3 concentration of up to 9 mol%. The diffusion of impurity cations and random incorporation into host lattice of Bi1/2Na1/2TiO3 materials resulted in distortion structural of host crystal. The optical band gap energy of Bi1/2Na1/2TiO3 materials decreased from 3.07 eV to 2.72 eV for 9 mol.% Bi(Ti1/2Ni1/2)O3-modified Bi1/2Na1/2TiO3 materials as solid solution. Room-temperature ferromagnetism was achieved in Bi(Ti1/2Ni1/2)O3-modified Bi1/2Na1/2TiO3 materials, thereby extending their applications. This work demonstrated a new method for integrating ferromagnetic properties in green ferroelectric materials for next-generation smart electronic devices.

中文翻译：

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Bi(Ti1/2Ni1/2)O3浓度对无铅Bi1/2Na1/2TiO3材料结构、光学和磁性能的影响

摘要 采用简单的溶胶-凝胶法合成了Bi(Ti1/2Ni1/2)O3修饰的Bi1/2Na1/2TiO3材料。X 射线衍射和拉曼散射光谱表明 Bi(Ti1/2Ni1/2)O3 材料形成固溶体，Bi(Ti1/2Ni1/2)O3 浓度高达 9 mol%。杂质阳离子的扩散和随机掺入Bi1/2Na1/2TiO3材料的主晶格导致主晶结构畸变。对于固溶体形式的 9 mol.% Bi(Ti1/2Ni1/2)O3 改性 Bi1/2Na1/2TiO3 材料，Bi1/2Na1/2TiO3 材料的光学带隙能量从 3.07 eV 降低到 2.72 eV。在 Bi(Ti1/2Ni1/2)O3 修饰的 Bi1/2Na1/2TiO3 材料中实现了室温铁磁性，从而扩展了它们的应用。