Naturally derived FeTiO 3 nanoparticles: analysis of optical properties
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Naturally derived FeTiO3 nanoparticles: analysis of optical properties Dhineshbabu Nattanmai Raman1 · Vettumperumal Rajapandi2 · Arunmetha Sundaramoorthy3 · Srither Satturappa Ravisekaran4 · Narendrakumar Annadurai5 Received: 14 June 2020 / Accepted: 12 August 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Eco-friendly metal titanates, which are abundant in nature, are widely used in our day-to-life in a variety of areas. This work is focused on the optical properties of F eTiO3 (FT) nanoparticles prepared by acid extraction method from ilmenite sand. The prepared FeTiO3 nanoparticles were analyzed by ultraviolet (UV) spectroscopy. Various linear optical parameters such as refractive index, extinction coefficient, absorption coefficient, real and imaginary parts of dielectric constant, loss tangent, optical conductivity, electron energy loss, and dielectric relaxation time were calculated in 1.5–6 eV energy range and discussed as a function of photon energy. The calculated values of the real part of complex permittivity and volume energy loss were higher than those of the imaginary part of complex permittivity and surface energy loss, respectively. The discussed results showed that the prepared FeTiO3 nanoparticles are suitable for the photocatalytic activity and optoelectronic device applications due to their hybridization orbital.
1 Introduction Ilmenite (FeTiO3), the most important and abundant ore mineral of titanium, occurs in various geographical locations such as America, Australia, Europe, Africa, and Asia. In India, it is found in the east coast beach sands of Andhra Pradesh, Odisha, and Tamil Nadu in south India. Additionally, it is found in the west coastal area of Kerala [1–3]. Attempts have been made extensively to study the ilmenite-structured titanates with MTiO3 (M (metal) = Ca, Zn, Fe, Co, and Ni) for optical properties [4–7]. Among different metal titanates, FeTiO3 has attracted considerable * Dhineshbabu Nattanmai Raman [email protected]; [email protected] 1
Department of Electronics and Communication Engineering, Aditya Engineering College, Surampalem, Andhra Pradesh 533437, India
2
Department of Physics, Fodhdhoo School, Fodhdhoo, Noonu Attol 04120, Republic of Maldives
3
Department of Electronics and Communication Engineering, K L E F (Deemed To Be University), Andhra Pradesh, Guntur District 522 502, India
4
Department of Physics, Southern University of Science and Technology, Shenzhen 518071, China
5
Department of Electronics and Communication Engineering, V V College of Engineering, Tisaiyanvilai, Tirunelveli, Tamil Nadu 627657, India
attention because of its peculiar properties such as wide bandgap (2.5–2.98 eV), antiferromagnetic semiconductor, easily tunable p- and n-type conductivity, and antiferromagnetic coupling between Fe layers. FeTiO3 can be used in a wide variety of applications such as semiconducting, electrochemical, low-voltage varistors, spintronics, environmental remediation, and UV-shielding
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