Effect of sintering temperature on the structural, morphological, optical and electrical properties of Ba1 − xLaxFe12O19
Document Type
Article
Publication Title
Applied Physics A: Materials Science and Processing
Abstract
La substituted M-type Barium hexaferrite, Ba(1−x)La(x)Fe12O19, (x = 0.25 and 0.30) were synthesized using ball milling followed by heat treatment at 1150˚C and 1300˚C and the influence of sintering temperature as well as La doping were presented. X-ray diffraction, FESEM, dielectric spectroscopy, and ferroelectric measurements were performed to study the structural, morphological, dielectric, and ferroelectric properties of the prepared samples. Rietveld refinement on the X-ray diffraction measurement reveals the formation of a phase magnetoplumbite structure of barium hexaferrite only for the samples sintered at 1300˚C. The secondary phase, along with the major magnetoplumbite structure, was observed for the sample sintered at 1150˚C. Hexagonal plate-like grains of different sizes were observed, and samples sintered at 1300˚C showed large-size grains. Porosity was observed to decrease with La doping. Impedance spectroscopy reveals that Maxwell-Wagner-type polarisation occurs with the relaxation of mobile charges having long-range hopping. However, the ferroelectric property was suppressed for samples sintered at 1300˚C.
DOI
10.1007/s00339-024-07696-0
Publication Date
8-1-2024
Recommended Citation
Nishkala, K. R.; Rao, Rajat Radhakrishna; Mutalik, Srinivas; and Murari, M. S., "Effect of sintering temperature on the structural, morphological, optical and electrical properties of Ba1 − xLaxFe12O19" (2024). Open Access archive. 10211.
https://impressions.manipal.edu/open-access-archive/10211
