Role of nickel doping on structural, optical, magnetic properties and antibacterial activity of ZnO nanoparticles

Journal Article · Fri Apr 15 00:00:00 EDT 2016 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.11.053· OSTI ID:22581485

Vijayaprasath, G.; Murugan, R. ^[1]; Palanisamy, S.; Prabhu, N. M. ^[2]; Mahalingam, T. ^[3]; Hayakawa, Y. ^[4]

---

1. School of Physics, Alagappa University, Karaikudi 630 004, Tamil Nadu (India)
2. Department of Animal Health and Management, Alagappa University, Karaikudi 630 004, Tamil Nadu (India)
3. Department of Electrical and Computer Engineering, Ajou University, Suwon 443-749 (Korea, Republic of)
4. Research Institute of Electronics, Shizuoka University, Hamamatsu 432-8011 (Japan)

Highlights: • The XRD analyses revealed that the synthesizes nickel doped ZnO (Zn{sub 1−x}Ni{sub x}O, x = 0.0, 0.03, 0.06 and 0.09) nanostructures have hexagonal wurtzite structure. • The photoluminescence measurements revealed that the broad emission was composed of different bands due to zinc and oxygen vacancies. • X-ray photoelectron spectroscopy (XPS) confirmed the Ni incorporation in ZnO lattice as Ni{sup 2+} ions. • Room temperature ferromagnetism was observed due to the oxygen vacancies and zinc interstitials are the main reasons for ferromagnetism in Ni doped ZnO NPs. - Abstract: Zn{sub 1−x}Ni{sub x}O nanoparticles were synthesized by co-precipitation method. The crystallite sizes of the synthesized samples found to decrease from 38 to 26 nm with increase in nickel concentration. FTIR spectra confirmed the presence of Zn−O stretching bands at 577, 573, 569 and 565 cm{sup −1} in the respective ZnO NPs. Optical absorption spectra revealed the red shifted and estimated band gap is found to decrease with increase of Ni doping concentration. The PL spectra of all the samples exhibited a broad emission at 390 nm in the visible range. The carriers (donors) bounded on the Ni sites were observed from the micro Raman spectroscopic studies. Pure and Ni doped ZnO NPs showed significant changes in the M–H loop, especially the diamagnetic behavior changed into ferromagnetic nature for Ni doped samples. The antiferromagnetic super-exchange interactions between Ni{sup 2+} ions is increased in higher Ni doped ZnO NPs and also their antibacterial activity has been studied.

• OSTI ID: 22581485
• Journal Information: Materials Research Bulletin, Vol. 76; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTRA
ANTIFERROMAGNETISM
DOPED MATERIALS
FERROMAGNETISM
FOURIER TRANSFORMATION
INFRARED SPECTRA
INTERSTITIALS
MAGNETIC PROPERTIES
NANOPARTICLES
NANOSTRUCTURES
NICKEL
NICKEL IONS
PHOTOLUMINESCENCE
RAMAN SPECTROSCOPY
SEMICONDUCTOR MATERIALS
TEMPERATURE RANGE 0273-0400 K
VACANCIES
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
ZINC OXIDES