Elhamel Mebark, Hebboul Zoulikha, Benbertal Djamal, Botella Pablo, Errandonea Daniel
Laboratoire Physico-Chimie des Matériaux, Université Amar Telidji de Laghouat, BP 37G, Route de Ghardaia, Laghouat 03000, Algeria.
Departamento de Física Aplicada-ICMUV, MALTA Consolider Team, Universidad de Valencia, Edificio de Investigación, Carrer del Doctor Moliner 50, 46100 Burjassot, Valencia, Spain.
Nanomaterials (Basel). 2024 May 30;14(11):960. doi: 10.3390/nano14110960.
We synthesized PrNiMnO, GdNiMnO, and ErNiMnO double perovskites in a nano-ceramic form by a sol-gel method. By means of room-temperature X-ray powder diffraction measurements, we determined the crystal structure of the three compounds, which is monoclinic, corresponding to a double perovskite structure, described by space group 2/ structure. From the determined structures, the bulk moduli were estimated to be 173-179 GPa. The average size particle of nanoparticles was determined from X-ray diffraction by the Langford method plot and by the Scherrer formula. The morphology and homogeneity of nanoparticles were analyzed by scanning electron microscopy. We found that they form compact agglomerations of approximately 200 nm in diameter. Fourier transform infrared spectroscopy measurements were performed, determining the absorption spectrum. The assignment of the measured infrared absorption bands is discussed.
我们通过溶胶-凝胶法合成了纳米陶瓷形式的PrNiMnO、GdNiMnO和ErNiMnO双钙钛矿。借助室温X射线粉末衍射测量，我们确定了这三种化合物的晶体结构，其为单斜晶系，对应于由空间群2/结构描述的双钙钛矿结构。根据所确定的结构，估计其体模量为173 - 179吉帕。通过兰福德方法图和谢乐公式由X射线衍射确定纳米颗粒的平均粒径。通过扫描电子显微镜分析纳米颗粒的形态和均匀性。我们发现它们形成了直径约200纳米的紧密团聚体。进行了傅里叶变换红外光谱测量，确定了吸收光谱。讨论了所测红外吸收带的归属。
