Cation distribution in Ni substituted Ba0.5Sr1.5Co2Fe12O22 Y-type hexagonal ferrites
| Autor: | S. Shravan Kumar Reddy, P. Yadagiri Reddy, M. Manivel Raja, M. Sreenath Reddy, M. Manendar, V. Raghavendra Reddy, J. Ramesh, Ch. Gopal Reddy |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Process Chemistry and Technology Dielectric Type (model theory) Surfaces Coatings and Films Electronic Optical and Magnetic Materials Magnetization symbols.namesake Crystallography Octahedron Mössbauer spectroscopy Materials Chemistry Ceramics and Composites symbols Crystallite Raman spectroscopy Dispersion (chemistry) |
| Zdroj: | Ceramics International. 47:9591-9596 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2020.12.094 |
| Popis: | The present work reports the study of cation distribution in Ni substituted polycrystalline Ba0.5Sr1.5Co2Fe12O22 (Co2Y-BSCFO) hexaferrite samples using complimentary experimental methods viz., in-field F 57 e Mossbauer and Raman spectroscopy. Combining the analysis of in-field F 57 e M o ¨ ssbauer and Raman spectroscopy measurements it is shown that the substituted Ni in Co2Y-BSCFO preferentially occupies the octahedral site with spin-down configuration i.e., 6cVI. The obtained cation distribution data is found to qualitatively match the magnetization values as obtained from bulk magnetic measurements. Temperature dependent dielectric data reveals a significant dispersion in dielectric constant associated with loss peaks and the conduction-hopping mechanism explains such behavior. |
| Databáze: | OpenAIRE |
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