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Spectroscopic and structural analysis of Ca substituted La orthoferrite |
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| Authors: | MA Ahmed R Seoudi SI El-dek |
| Institution: | aMaterials Science Laboratory, Physics Department, Faculty of Science, Cairo University, Giza 12311, Egypt bSpectroscopy Department, Physics Division, National Research Center, Dokki, Giza 12311, Egypt |
| Abstract: | Samples of orthoferrites La1?xCaxFeO3 (0.15≤x≤0.45) were synthesized by double sintering ceramic technique. X-ray diffraction and infrared spectroscopy experiments were carried out and discussed for the investigated samples. The data showed the formation of single-phase orthorhombic structure of space group Pbnm. The FTIR spectra were performed in the region (1200–200 cm?1). Four main absorption bands were present with some side bands and shoulders in the range (1200–400 cm?1). Another four bands were appeared in the range (400–200 cm?1). The positions, intensities and values of the absorptions bands vary depending on the Ca content in the samples. The first absorption band appeared at about 920 cm?1 was assigned to the La–O stretching vibration. |
| Keywords: | Orthoferrites X-ray diffraction Infrared spectroscopy |
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