Sintering temperature reflected cation distribution of Zn2+ substituted CoFe2O4
来源期刊：中南大学学报(英文版)2013年第6期
论文作者：Sanjay R. Kamble Sagar E. Shirsath S. M. Patange K. M. Jadhav
文章页码：1469 - 1474
Key words：ferrite; chemical synthesis; sintering temperature; cation distribution
Abstract: The most remarkable effect in spinel ferrites is the strong dependence of properties on the state of structural disorder and, in particular, on the cation distribution. The structural characterization of a Co-Zn ferrite nanoparticle sample was reported which prepared by wet chemical co-precipitation method. The samples were sintered at three different temperatures viz. 650 °C, 850 °C and 1 050 °C for 12 h. The structural details like: lattice constant and distribution of cations in the tetrahedral and octahedral interstitial voids have been deduced through X-ray diffraction (XRD) data analysis. Lattice constant was found to increase with the increase in Zn2+ ions and sintering temperature. Theoretical intensity ratios of (220), (400), (440) planes were considered, as these reflections are sensitive to cations on the A and B sites. Close agreement of the theoretical intensity ratio with the intensity ratio observed from XRD pattern supports the occupancy of Zn2+ ions and Co2+ ions on the octahedral and tetrahedral sites, respectively.
Sanjay R. Kamble1, Sagar E. Shirsath2, S. M. Patange3, K. M. Jadhav4
(1. Department of Physics, SMDM College, Kalamb, Osmanabad 413613, India;2. Spin Device Technology Centre, Faculty of Engineering, Shinshu University, Nagano 380-8553, Japan;3. Materials Research Laboratory, Srikrishna Mahavidyalaya Gunjoti, Omerga 413613, India;4. Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, India)
Abstract:The most remarkable effect in spinel ferrites is the strong dependence of properties on the state of structural disorder and, in particular, on the cation distribution. The structural characterization of a Co-Zn ferrite nanoparticle sample was reported which prepared by wet chemical co-precipitation method. The samples were sintered at three different temperatures viz. 650 °C, 850 °C and 1 050 °C for 12 h. The structural details like: lattice constant and distribution of cations in the tetrahedral and octahedral interstitial voids have been deduced through X-ray diffraction (XRD) data analysis. Lattice constant was found to increase with the increase in Zn2+ ions and sintering temperature. Theoretical intensity ratios of (220), (400), (440) planes were considered, as these reflections are sensitive to cations on the A and B sites. Close agreement of the theoretical intensity ratio with the intensity ratio observed from XRD pattern supports the occupancy of Zn2+ ions and Co2+ ions on the octahedral and tetrahedral sites, respectively.
Key words:ferrite; chemical synthesis; sintering temperature; cation distribution
