Effect of Vd-doping on dielectric, magnetic and gas sensing properties of nickel ferrite nanoparticles
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Effect of Vd‑doping on dielectric, magnetic and gas sensing properties of nickel ferrite nanoparticles V. Manikandan1 · Iulian Petrila2 · S. Kavita3 · R. S. Mane4 · Juliano C. Denardin5 · Stefan Lundgaard6 · Saulius Juodkazis6 · S. Vigneselvan7 · J. Chandrasekaran8 Received: 30 June 2020 / Accepted: 10 August 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Pristine and vanadium-doped nickel ferrite ( NiFe2O4) nanoparticles (NPs) were prepared by a chemical co-precipitation method. They were characterized by X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy to explore their crystallinity, morphology and chemical states. Dielectric constant and dielectric loss properties were studied as a function of frequency and temperature and it was found that V-doping resulted in the enhancement of the dielectric properties. Both pristine and V-doped ferrites showed superparamagnetic nature and zero coercivity and retentivity. However, the saturation magnetization was decreased after V-doping, suggesting presence of superexchange interaction between A–B sites. Both pristine and V-doped NiFe2O4 NPs were also used for NO sensing studies and it was revealed that V-doped gas sensor revealed a better sensing performance (response of 5 s and sensitivity of 43 to 200 ppm NO gas) than pristine one (response of 9 s and sensitivity of 37 to 200 ppm NO gas).
1 Introduction
* V. Manikandan [email protected] 1
Department of Physics, Kongunadu Arts and Science College, Coimbatore 641 029, India
2
Faculty of Automatic Control and Computer Engineering, Gheorghe Asachi Technical University of Iasi, Str. Dimitrie Mangeron, Nr. 27, 700050 Iasi, Romania
3
Centre for Automotive Energy Materials, International Advanced Research Centre for Powder Metallurgy and New Materials, Chennai, Tamil Nadu 113, India
4
Center for Nanomaterial & Energy Devices, Swami Ramanand Teerth Marathwada University, Dnyanteerth, Vishnupuri, Nanded 431606, India
5
Department of Physics, University of Santiago and CEDENNA, Santiago, Chile
6
Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
7
Department of Physics, Government College of Technology, Coimbatore 641 013, India
8
Department of Physics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore 641 020, India
Polycrystalline metal oxide compounds have gained enormous applications in electronics and materials science sections due to their low costs, tuneable electrical properties, good mechanical properties and high chemical stability [1]. Among different metal oxide compounds, nickel ferrite ( NiFe2O4) with spinel structure, not only has good ferromagnetic properties due to anti-parallel spins between tetrahedral and octahedral sites, but also it has good soft magnetic properties [2, 3]. In addition, as a semiconducting compound, it can be used as se
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