Xiao RenZheng, Hu Tao, Yuan XianBao, Zhou JianJun, Ma XiaoQiang, Fu DeJun
College of Mechanical & Power Engineering, China Three Gorges University Yichang 443002 China
Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance, China Three Gorges University Yichang 443002 China.
RSC Adv. 2018 Mar 28;8(22):12060-12068. doi: 10.1039/c8ra00263k. eCollection 2018 Mar 26.
The Bi La Pr FeO ( = 0 and 0.05; = 0, 0.10, 0.15 and 0.20) (BLPFO) powders were prepared using a hydrothermal method. The lattice structure of the samples was characterized by X-ray diffraction, which revealed an increase in the lattice constant of the doped samples evidencing the substitution of Bi by La and Pr ions. Raman spectroscopy was used to further analyse the structural distortion in the samples. Scanning electron microscopy was used to characterize the morphology of the samples. The atomic concentrations (%) of La and Pr elements in the samples were detected by Energy Dispersive X-ray spectroscopy. The ferromagnetism of the samples increased with the increase in La and Pr co-doping concentration as observed by vibrating sample magnetometry at room temperature. The evidence of reverse distortion of FeO octahedral structure in the La and Pr co-doped samples was revealed by the Mössbauer spectra parameters: Is, Qs, , , and area ratio ( / ) of two sextets.
采用水热法制备了BiLaPrFeO（x = 0和0.05；y = 0、0.10、0.15和0.20）（BLPFO）粉末。通过X射线衍射对样品的晶格结构进行了表征，结果表明掺杂样品的晶格常数增大，证明La和Pr离子取代了Bi。利用拉曼光谱进一步分析样品中的结构畸变。用扫描电子显微镜对样品的形貌进行了表征。通过能量色散X射线光谱法检测了样品中La和Pr元素的原子浓度（%）。室温下通过振动样品磁强计观察到，随着La和Pr共掺杂浓度的增加，样品的铁磁性增强。穆斯堡尔谱参数：Is、Qs、δ、ΔEQ、ΔEZ和两个六重峰的面积比（A1/A2）揭示了La和Pr共掺杂样品中FeO八面体结构的反向畸变证据。
