Investigation of dielectric, electrical and optical properties of copper substituted Mn-Zn nanoferrites

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Investigation of dielectric, electrical and optical properties of copper substituted Mn-Zn nanoferrites Anjana Sharma1,* , Khalid Mujasam Batoo2, Omar M. Aldossary3, Shilpi Jindal1, Nupur Aggarwal4, and Gagan Kumar1 1

Department of Physics, Chandigarh University, Mohali, Punjab, India King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia 3 Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia 4 Department of Physics, Maharishi Markandeshwar (Deemed to be University), Mullana, Haryana, India 2

Received: 26 June 2020

ABSTRACT

Accepted: 28 October 2020

Transition metal such as Copper substituted Mn-Zn magnetic nano ferrite with general formula Mn0.5Zn0.5CuxFe2-xO4 (x = 0.0, 0.1, 0.2, and 0.3) were fabricated by solution combustion method and expose how significant properties of the samples are modified accordingly by dopant concentration. By FTIR spectroscopy various functional group present in Mn-Zn ferrites is studied. The optical plots revealed bandgap energy reduced from 2.42 to 1.82 eV although the electrical study shown the highest conductivity of synthesized nano ferrite is 1.93 9 10-8Scm-1. The dielectric constant as well as dielectric loss behavior recorded at room temperature and were analyzed with increasing temperature; both dielectric constant and loss tangent upsurge however with increasing frequency both are observed to reduce. Doping with Cu has the potentiality of accumulative dielectric constant and conductivity of Mn0.5Zn0.5CuxFe2-xO4 thereby improving its application for electromagnetic devices.

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Springer Science+Business

Media, LLC, part of Springer Nature 2020

1 Introduction Nano ferrites belong to spinel structure which has fascinated attention in the field of material science and development of technology for its amazing dielectric, magnetic, optical, and electrical properties [1, 2]. These extraordinary properties of environmentfriendly lead-free. Mn-Zn nano ferrites show an excessive potential in numerous electronic devices such as inter-body drug delivery, magnetic refrigeration systems, and catalytic application, and

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https://doi.org/10.1007/s10854-020-04782-w

photocatalyst, absorbent materials properties like superparamagnetic and in microwave device applications. Mn-Zn ferrites consist network of distorted B2O4 octahedral corner-sharing in such a manner that two dissimilar types of interstices A and B are accessible for cation distribution occupying generic formula AB2O4, here A site have divalent metal ion, B site with a trivalent metal ion [3]. Mn-Zn ferrites (MZF) are soft spinel ferrites having cubic symmetry that occur in this category. Different ionic size substitutions either at A or B sites play an important role

J Mater Sci: Mater Electron

to alter their physical properties. The microstructure and electric and magnetic properties of spinel structure Nano ferrite of Mn–Zn nano ferrites are