Open AccessTemperature dependent magnetic studies of Ba0.5Sr0.5Co0.2Fe11.8O19 prepared by solid state reaction method
Author(s) -
V Argish,
M. Shalini,
Subasa C. Sahoo
Publication year - 2022
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1233/1/012003
Subject(s) - curie temperature , anisotropy , analytical chemistry (journal) , coercivity , lattice constant , materials science , magnetization , chemistry , solid solution , lattice (music) , nuclear magnetic resonance , condensed matter physics , magnetic field , metallurgy , ferromagnetism , diffraction , physics , chromatography , quantum mechanics , acoustics , optics
Ba 0.5 Sr 0.5 Co 0.2 Fe 11.8 O 19 was synthesized using solid state reaction method. Lattice parameters ‘a’ and ‘c’ were found to be 5.886 Å and 23.110 Å respectively. Scanning electron microscopy studies showed platelet type structures in the sample and the elemental mapping showed the uniform distribution of cations throughout the sample. The spontaneous magnetization (M s ) of 62 emu/g with coercivity (H c ) of 1.22 kOe was observed at 300K. The Ms value increased whereas the H c decreased with the decreasing measurement temperature. The highest Ms value of 88 emu/g was observed at 60K. Curie temperature of 819 K was observed for the sample. The anisotropy constant (K 1 ) and anisotropy field (H a ) were found to be increased with the decrease in measurement temperature. The observed magnetic behaviour can be explained on the basis of distribution of cations in the lattice sites and shape anisotropy of the prepared sample.