Cation distribution in Ni substituted Ba0.5Sr1.5Co2Fe12O22 Y-type hexagonal ferrites. Issue 7 (1st April 2021)

• Record Type: Journal Article
• Authors: Manendar, M.; Reddy, S. Shravan Kumar; Ramesh, J.; Reddy, M. Sreenath; Raja, M. Manivel; Reddy, Ch. Gopal; Reddy, P. Yadagiri; Reddy, V. Raghavendra
• Is Part Of: Ceramics international. Volume 47:Issue 7(2021)Part A
• Page Start: 9591
• Page End: 9596
• Publication Date: 2021-04-01
• Subjects: Y-type hexaferrites -- Cation distribution -- Mössbauer spectroscopy; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.12.094
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The present work reports the study of cation distribution in Ni substituted polycrystalline Ba0.5 Sr1.5 Co2 Fe12 O22 (Co2 Y-BSCFO) hexaferrite samples using complimentary experimental methods viz., in-field F 57 e M ö ssbauer 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 Co2 Y-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.