دورية أكاديمية
Structural Rietveld refinement and vibrational study of MgCr x Fe 2 − x O 4 spinel ferrites
| العنوان: | Structural Rietveld refinement and vibrational study of MgCr x Fe 2 − x O 4 spinel ferrites |
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| المؤلفون: | Sabri, K., Rais, A., Taibi, K., Moreau, M., Ouddane, B., Addou, A. |
| المساهمون: | Laboratoire des Sciences et technique de l’Environnement et de la Valorisation, Université de Mostaganem, Laboratoire des Sciences et Génie des Matériaux Université Houari Boumediene - Alger, Université des Sciences et de la Technologie Houari Boumediene = University of Sciences and Technology Houari Boumediene Alger (USTHB), Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 (LASIRE), Institut de Chimie - CNRS Chimie (INC-CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | ISSN: 0921-4526 ; EISSN: 1873-2135. |
| بيانات النشر: | HAL CCSD Elsevier |
| سنة النشر: | 2016 |
| المجموعة: | LillOA (HAL Lille Open Archive, Université de Lille) |
| مصطلحات موضوعية: | FT-IR, Mg-Cr spinel ferrites, Raman, Rietveld refinement, XRD, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry |
| الوصف: | Spinel ferrites with the general formula MgCr x Fe 2 − x O 4 (0≤x≤1) were synthesized by the standard ceramic technique and characterized by X-ray diffraction. The XRD patterns confirmed that the mixed ferrite samples are in the cubic spinel structure which is further validated by Rietveld refinement in the space group Fd3m. The crystal structure and cell parameters were refined by Rietveld analysis. The vibrational study was achieved using Fourier Transform-InfraRed (FT-IR) and Raman spectroscopy. From FT-IR band frequencies, the force constants K t and K o , for tetrahedral (A) and octahedral (B) sites respectively, have been calculated and discussed with the trend of bond lengths obtained from Rietveld refinement. For all compositions, Raman spectra revealed the five active modes showing the vibration of O 2- ions at both the A-site and B-site ions. The frequencies trend with chromium content of both FT-IR and Raman spectra showed a shift toward higher values for all modes. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | hal-01389138; https://hal.science/hal-01389138Test |
| DOI: | 10.1016/j.physb.2016.08.011 |
| الإتاحة: | https://doi.org/10.1016/j.physb.2016.08.011Test https://hal.science/hal-01389138Test |
| رقم الانضمام: | edsbas.D3EC3851 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.physb.2016.08.011 |
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