ITO (In0.95Sn0.05)2O3 and Ni doped ITO (In0.90Sn0.05Ni0.05)2O3 nanoparticles (NPs) were synthesized by solid state reaction method and subjected to study their structural, optical and magnetic properties. The NPs had a size distribution in the range of 40 nm and were identified as the bcc cubic In2O3 by X-ray diffraction (XRD). Optical properties of the samples were studies using UV-Vis-NIR spectrophotometer. Magnetic measurements were carried out at room temperature and at 100 K using vibrating sample magnetometer and found that the ITO nanoparticles were ferromagnetic in nature at room temperature. The strength of the magnetization decreased in ITO nanoparticles when the magnetic measurements carried out at 100 K. © 2016 Author(s).

Shaik Kaleemulla

Department of Physics

School of Advanced Sciences

Vellore Campus

Kuppan P

Department of Manufacturing Engineering

School of Mechanical Engineering

Krishnamoorthi C

Babu S.H

Krishna N.S

Rao N.M

Joshi G.M

Basheed G.A.

Fulltext

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

&nbsp;

&nbsp;

VIT University

Synthesis and characterizations of (In0.90Sn0.05Ni0.05)2O3 nanoparticles using solid state reaction method

AIP Conference Proceedings

Journal of Magnetism and Magnetic Materials

Effect of doping concentration, temperature and magnetic field on magnetic properties of Mn doped ITO nanoparticles and thin films

The iron (Fe) and tin (Sn) co-doped indium oxide (In2O3) nanoparticles at different Fe doping concentrations were prepared by solid state reaction and studied for their structural, optical and magnetic properties. The XRD patterns confirmed the cubic structure of all the undoped and co-doped samples. The average crystallite size decreased on increasing from 41 to 32 nm by increase of Fe doping concentration from 5 to 15 at.%. The optical band gap of the samples was found to decrease from 2.89 to 2.77 eV by increasing the Fe dopant concentration. The magnetic properties of the nanoparticles were studied using vibrating sample magnetometer at room temperature and at 100 K by applying the field ±75,000 Oe perpendicular to the sample. The magnetization increased with increase of applied magnetic field and no saturation was observed in all the samples. The similar behavior was observed for the nanoparticles studied at 100 K. © 2017, Springer Science+Business Media, LLC.

Journal of Materials Science: Materials in Electronics

Synthesis and magnetic properties of (Fe, Sn) co-doped In2O3 nanoparticles

Iron doped indium oxide dilute magnetic semiconductor (In1-xFex)2O3 (x = 0.00, 0.03, 0.05, and 0.07) powders were synthesized by standard solid state reaction method followed by vacuum annealing. The effect of Fe concentration on structural, optical, and magnetic properties of the (In1-xFex)2O3 powders have been systematically studied. X-ray diffraction patterns confirmed the polycrystalline cubic structure of all the samples. An optical band gap increases from 3.12 eV to 3.16 eV while Fe concentration varying from 0.03 to 0.07. Magnetic studies reveal that virgin/undoped In2O3 is diamagnetic. However, all the Fe-doped In2O3 samples are ferromagnetic. The saturation magnetization (Ms) of ferromagnetic (In1-xFex)2O3 (x = 0.03, 0.05, and 0.07) samples increases from 11.56 memu/g to 148.64 memu/g with x = 0.03-0.07. The observed ferromagnetism in these samples was attributed to magnetic nature of the dopant (Fe) as well as defects created in the samples during vacuum annealing. © 2014 Elsevier Ltd. All rights reserved.

Materials Research Bulletin

Structural, optical, and magnetic properties of Fe doped In2O3 powders

Iron-doped SnO 2 diluted magnetic semiconducting powders (Sn 1-x Fe x O 2 , x=0.00, 0.03, 0.05, 0.07, 0.10, and 0.15) were synthesized by a simple solid state reaction followed by vacuum annealing and studied the effect of Fe dopant concentrations on structural, optical, and magnetic properties of the synthesized samples. From the X-ray diffraction, it was confirmed that the samples prepared at lower dopant concentrations were tetragonal in structure whereas the samples prepared at higher dopant concentration exhibited orthorhombic SnO and Fe 2 O 3 phases along with tetragonal SnO 2 structure. FT-IR spectrum has been used to confirm the formation of Sn-O bond. The optical band gap of the Sn 1-x Fe x O 2 powders was increased from 3.6 eV to 3.7 eV with increase of dopant concentration. Raman spectroscopy measurement revealed that the broadening of the most intense Raman peak observed at 630 cm -1 with Fe doping, conforming that the Fe ions are substituted at the Sn sites in the SnO 2 lattice. Vibrating sample magnetometer measurements confirmed that the Sn 1-x Fe x O 2 powders were ferromagnetic at room temperature. © 2013 Springer Science+Business Media New York.

Journal of Superconductivity and Novel Magnetism

Physical Properties of Sn1−x Fe x O2 Powders Using Solid State Reaction

Nickel-doped indium oxide diluted magnetic semiconducting powders ((In 1-xNix)2O3, x=0.00, 0.03, 0.05, 0.07 and 0.09) were synthesized by a simple solid state reaction followed by vacuum annealing. Structural, optical and magnetic properties of (In 1-xNix)2O3 powders were studied as a function of doped Ni concentration. X-ray diffraction confirmed polycrystalline cubic structures. Decrease in optical band gap from 3.07 eV to 2.99 eV was observed when dopant concentration of Ni was increased from x=0.03 to x=0.07. Vibrating sample magnetometer measurements confirmed that all (In 1-xNix)2O3 powders were ferromagnetic at room temperature. © 2013 Elsevier Ltd. All rights reserved.

Materials Science in Semiconductor Processing

Structural, optical and magnetic properties of (In1−xNix)2O3 (0≤x≤0.09) powders synthesized by solid state reaction

Nickel (Ni) doped SnO2powder samples were prepared using solid-state reaction with dopant concentrations in the range of 3 at.% to 15 at.%. The influence of Ni doping on structural, optical, and magnetic properties of the powder samples has been investigated. All the Ni doped powder samples exhibited tetragonal structure of SnO2. A decrease in optical band gap was observed with increase of Ni doping levels. The vibrating sample magnetometer measurements revealed that the Ni doped SnO2powder samples were ferromagnetic at room temperature.

Advances in Condensed Matter Physics

Structural and Magnetic Properties of Ni DopedSnO2

Magnetic properties of Ni-implanted ITO thin films

Journal	AIP Conference Proceedings
Publisher	Author(s)
ISSN	0094243X
Open Access	Yes