Structural and magnetic properties of Ni0.8M0.2Fe2O4 (M = Cu, Co) nano-crystalline ferrites
Nano-crystalline nickel ferrites are interesting materials due to their large physical and magnetic properties. In the present work, two kinds of spinel ferrites Ni0.8M0.2Fe2O4 (M = Cu, Co) are synthesized by using sol-gel auto-combustion method and the results are compared with NiFe2O4. The structu...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-06-01
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| Series: | Results in Physics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379718300603 |
| _version_ | 1811201484808781824 |
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| author | K. Vijaya Babu G. Satyanarayana B. Sailaja G.V. Santosh Kumar K. Jalaiah M. Ravi |
| author_facet | K. Vijaya Babu G. Satyanarayana B. Sailaja G.V. Santosh Kumar K. Jalaiah M. Ravi |
| author_sort | K. Vijaya Babu |
| collection | DOAJ |
| description | Nano-crystalline nickel ferrites are interesting materials due to their large physical and magnetic properties. In the present work, two kinds of spinel ferrites Ni0.8M0.2Fe2O4 (M = Cu, Co) are synthesized by using sol-gel auto-combustion method and the results are compared with NiFe2O4. The structural properties of synthesized ferrites are determined by using X-ray powder diffraction; scanning electron microscope and Fourier transform infrared spectroscopy. The cation distribution obtained from X-ray diffraction show that cobalt/copper occupies only tetrahedral site in spinel lattice. The lattice constant increases with the substitution of cobalt/copper. The structural parameters like bond lengths, tetrahedral and octahedral edges have been varied with the substitution. The microstructural study is carried out by using SEM technique and the average grain size is increased with nickel ferrite. The initial permeability (μi) is improving with the substitution. The observed g-value from ESR is approximately equal to standard value. Keywords: X-ray diffraction, Initial permeability, Spinel structure, ESR |
| first_indexed | 2024-04-12T02:22:25Z |
| format | Article |
| id | doaj.art-86577d39b50a4d6989553ec8934eb4ce |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-04-12T02:22:25Z |
| publishDate | 2018-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-86577d39b50a4d6989553ec8934eb4ce2022-12-22T03:52:05ZengElsevierResults in Physics2211-37972018-06-0195562Structural and magnetic properties of Ni0.8M0.2Fe2O4 (M = Cu, Co) nano-crystalline ferritesK. Vijaya Babu0G. Satyanarayana1B. Sailaja2G.V. Santosh Kumar3K. Jalaiah4M. Ravi5Advanced Analytical Laboratory, Andhra University, Visakhapatnam 530 003, India; Corresponding author.Advanced Analytical Laboratory, Andhra University, Visakhapatnam 530 003, IndiaAdvanced Analytical Laboratory, Andhra University, Visakhapatnam 530 003, IndiaAdvanced Analytical Laboratory, Andhra University, Visakhapatnam 530 003, IndiaDepartment of Physics, Andhra University, Visakhapatnam 530 003, IndiaDepartment of Materials Science and Engineering, Harbin Institute of Technology, ChinaNano-crystalline nickel ferrites are interesting materials due to their large physical and magnetic properties. In the present work, two kinds of spinel ferrites Ni0.8M0.2Fe2O4 (M = Cu, Co) are synthesized by using sol-gel auto-combustion method and the results are compared with NiFe2O4. The structural properties of synthesized ferrites are determined by using X-ray powder diffraction; scanning electron microscope and Fourier transform infrared spectroscopy. The cation distribution obtained from X-ray diffraction show that cobalt/copper occupies only tetrahedral site in spinel lattice. The lattice constant increases with the substitution of cobalt/copper. The structural parameters like bond lengths, tetrahedral and octahedral edges have been varied with the substitution. The microstructural study is carried out by using SEM technique and the average grain size is increased with nickel ferrite. The initial permeability (μi) is improving with the substitution. The observed g-value from ESR is approximately equal to standard value. Keywords: X-ray diffraction, Initial permeability, Spinel structure, ESRhttp://www.sciencedirect.com/science/article/pii/S2211379718300603 |
| spellingShingle | K. Vijaya Babu G. Satyanarayana B. Sailaja G.V. Santosh Kumar K. Jalaiah M. Ravi Structural and magnetic properties of Ni0.8M0.2Fe2O4 (M = Cu, Co) nano-crystalline ferrites Results in Physics |
| title | Structural and magnetic properties of Ni0.8M0.2Fe2O4 (M = Cu, Co) nano-crystalline ferrites |
| title_full | Structural and magnetic properties of Ni0.8M0.2Fe2O4 (M = Cu, Co) nano-crystalline ferrites |
| title_fullStr | Structural and magnetic properties of Ni0.8M0.2Fe2O4 (M = Cu, Co) nano-crystalline ferrites |
| title_full_unstemmed | Structural and magnetic properties of Ni0.8M0.2Fe2O4 (M = Cu, Co) nano-crystalline ferrites |
| title_short | Structural and magnetic properties of Ni0.8M0.2Fe2O4 (M = Cu, Co) nano-crystalline ferrites |
| title_sort | structural and magnetic properties of ni0 8m0 2fe2o4 m cu co nano crystalline ferrites |
| url | http://www.sciencedirect.com/science/article/pii/S2211379718300603 |
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