Effect of Mn Doping on the Structural, Optical and Magnetic Properties of SnO_2 Nanoparticles

• Authors: M. Saravanakumar , S. Agilan , N. Muthukumarasamy , V. Rukkumani , A. Marusamy , A. Ranjitha
• Languages of publication: EN

Abstracts

EN

Undoped and Mn doped SnO_2 prepared by co-precipitation method exhibits nanocrystalline nature with prominent peaks along (110), (101), (211), and (310) planes. All the prepared samples are nanocrystalline with crystallite size lying in the range of 4.8-5.6 nm. The prepared SnO_2 nanoparticles exhibit single tetragonal crystalline phase. The high resolution transmission electron microscopy images show that the particles are nanocrystalline in nature. The composition of the prepared samples have been analyzed using energy dispersive analysis of X-rays spectra. The photoluminescence spectroscopy shows the recombination of electrons in singly occupied oxygen vacancies with photoexcited holes in the valence band. Broad UV emission at 426 nm is observed in photoluminescence. UV-vis absorption spectral studies showed a peak at 385 nm. Magnetic measurements revealed that all the doped samples exhibit room temperature ferromagnetism, which is identified as an intrinsic characteristic obtained on doping. Pure SnO_2 nanoparticles showed diamagnetism, SnO_2 with lower Mn content show larger magnetization and with increasing Mn content the retentivity and coercivity are found to decrease.

Keywords

EN

75.60.Ej; 78.60.Lc; 61.46.Df; 68.37.Hk; 68.37.Og

Discipline

• 68.37.Og: High-resolution transmission electron microscopy (HRTEM)
• 68.37.Hk: Scanning electron microscopy (SEM) (including EBIC)
• 78.60.Lc: Optically stimulated luminescence
• 75.60.Ej: Magnetization curves, hysteresis, Barkhausen and related effects(for hysteresis in ferroelectricity, see 77.80.Dj)
• 61.46.Df: Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 6
• Pages: 1656-1661

Dates

published

2015-06

received

2014-03-04

(unknown)

2014-12-04

Contributors

author

M. Saravanakumar

• Department of Physics, SVS College of Engineering, Coimbatore, India

author

S. Agilan

• Department of Physics, Coimbatore Institute of Technology, Coimbatore, India

author

N. Muthukumarasamy

• Department of Physics, Coimbatore Institute of Technology, Coimbatore, India

author

V. Rukkumani

• Department of Electronics and Instrumentation, Sri Ramakrishna Engineering College, Coimbatore, India

author

A. Marusamy

• Department of Physics, Coimbatore Institute of Technology, Coimbatore, India

author

A. Ranjitha

• Department of Physics, Coimbatore Institute of Technology, Coimbatore, India

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Identifiers

DOI

10.12693/APhysPolA.127.1656