Structural, dielectric and ferroelectric studies of (x) Mg{sub 0.25}Cu{sub 0.25}Zn{sub 0.5}Fe{sub 2}O{sub 4} + (1-x) BaTiO{sub 3} magnetoelectric nano-composites

Journal Article · Fri May 06 04:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4946580· OSTI ID:22606576

Muneeswaran, M.; Giridharan, N. V. ^[1]

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1. Department of Physics, National Institute of Technology, Tiruchirapalli-620015 (India)

The Particulate nano-composites of ferrite and ferroelectric phases having the general formula (x) Mg{sub 0.25}Cu{sub 0.25}Zn{sub 0.5}Fe{sub 2}O{sub 4} + (1-x) BaTiO{sub 3} (x=15%, 30% and 45%) were synthesized by sintering mixtures of highly ferroelectric BaTiO{sub 3} (BT) and highly magneto-strictive magnetic component Mg{sub 0.25}Cu{sub 0.25}Zn{sub 0.5}Fe{sub 2}O{sub 4}(MCZF). The presence of constituent phases of ferrite, ferroelectric and their composites were probed and confirmed by X-ray diffraction (XRD) studies. Surface morphology of the samples has been investigated using Field Emission Scanning Electron Microscope (FESEM). The variation of dielectric constant and dissipation factor as a function of frequency from 100 Hz to 1 MHz at room temperature were carried out using a Hioki LCR Hi-Tester. The dielectric constant and dielectric loss were found to decrease rapidly in the low frequency region and became almost constant in the high frequency region. The electrical conductivity deduced from the measured dielectric data has been thoroughly analyzed and found that the conduction mechanism in these composites is in conformity with small polaron hopping model. The ferroelectric properties of synthesized magneto-electric nano-composites were measured using P-E loop tracer.

• OSTI ID: 22606576
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1728; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
BARIUM COMPOUNDS
COPPER COMPOUNDS
DISSIPATION FACTOR
ELECTRIC CONDUCTIVITY
FERRITES
FERROELECTRIC MATERIALS
FIELD EMISSION
FREQUENCY DEPENDENCE
MAGNESIUM COMPOUNDS
MAGNETIC PROPERTIES
MAGNETOSTRICTION
NANOCOMPOSITES
PERMITTIVITY
SCANNING ELECTRON MICROSCOPY
SINTERING
SURFACES
TEMPERATURE RANGE 0273-0400 K
TITANATES
X-RAY DIFFRACTION
ZINC COMPOUNDS