Electrical Conductivity and Modulus Studies of x [CNFO]-(1-x) [0.5BCT-0.5BZT] Multiferroic with Dielectric, Magnetic and Magneto-dielectric Properties

A. B. Kakade; S. K. Deshp; e; S. B. Kulkarni

From The Journal:

Engineered Science

Volume 18, 2022

Electrical Conductivity and Modulus Studies of x [CNFO]-(1-x) [0.5BCT-0.5BZT] Multiferroic with Dielectric, Magnetic and Magneto-dielectric Properties

Authors
Authors and affiliations

A. B. Kakade, S. K. Deshpandeand S. B. Kulkarni

A. B. Kakade¹

S. K. Deshpande²

S. B. Kulkarni^1,*,Email

¹Department of Physics, The Institute of Science, 15, Madam Cama Road, Mumbai, 400032, India

²UGC-DAE Consortium for Scientific Research, Bhabha Atomic Research Center, Mumbai, 400085, India.

Abstract

x [Co_0.9Ni_0.1Fe₂O₄]-(1-x) [0.5Ba_0.7Ca_0.3TiO₃-0.5BaZr_0.2Ti_0.8O₃] multiferroic composite was formed by hydroxide co-precipitation method for x = 0.3, 0.4 & 0.5. X-ray diffractometer (XRD) and Scanning Electron Microscopy (SEM) were used for the structural and morphological studies of these composites respectively. Perovskite phase of the ferroelectric material and spinel phase of the ferrite were confirmed by the XRD spectra. Impedance analyzer was used to study the dielectric properties of the composite. Dielectric constant and tangent loss (Quality factor) variation of the composites were investigated for 100 Hz to 1 MHz frequency. Increase in magnetocapacitance was observed with increasing magnetic field up to 1 Tesla. Magnetodielectric (MD) effect of the composites can be explained on the basis of contribution of interfacial polarization to dielectric constant which depends on magnetic field and variation in dielectric constant produced by induced stress. Ac conductivity of the materials which depends on the frequency follows Jonscher’s universal power law. These materials shows Arrhenius behavior which can be confirmed by temperature dependent dc conductivity. Modulus studies gives strong peaks which shifts towards higher frequency with increasing temperature. Saturation magnetization of composites increases as CNFO content in the composite increases.

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Publication details

Received: 27 Mar 2021
Revised: 11 Jun 2021
Accepted: 21 Jun 2021
Published online: 23 Jun 2021

Article type:
Research Paper

DOI:
10.30919/es8d485

Volume:
18

Page:
168-176

Citation:
Engineered Science, 2022, 18, 168-176

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Number of downloads:
4261

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9

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Electrical properties of x [CNFO]-(1-x) [0.5BCT-0.5BZT] multiferroic composite characterized for mul....

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Electrical Conductivity and Modulus Studies of x [CNFO]-(1-x) [0.5BCT-0.5BZT] Multiferroic with Dielectric, Magnetic and Magneto-dielectric Properties

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