Improvement of room temperature electric polarization and ferrimagnetic properties of Co1.25Fe1.75O4 ferrite by heat treatment
作者： R.N. Bhowmik , A.K. Sinha
DOI: 10.1016/J.JMMM.2016.08.014
关键词:
摘要: Abstract We report the improvement of electric and magnetic properties chemical routed samples Co 1.25 Fe 1.75 O 4 ferrite. Synchrotron X-ray diffraction pattern confirmed cubic spinel structure in all samples. Raman spectroscopy provided information mixed-type structure, where 2+ 3+ ions order both octahedral tetrahedral sites. The thermal heat treatment has brought a systematic change polarization parameters. At critical annealing temperature ( T AN ) 800 °C, sample shown highest coercivity ~596 Oe relatively large squareness ~0.5. electrical conductivity, dielectric loss constant have decreased with increase . becomes stable for above 800 °C. annealed range 900–1000 °C good signature ferroelectric polarization, although it is under saturation value leakage due to conductive effect observed. This work shows scope capacitive on increasing as-prepared ferrite sample.
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