Effects of Ni concentration on structural, magnetic and optical properties of Ni-doped ZnO nanoparticles

Yang Liu, Hongbo Liu, Zhenguo Chen, Naveen Kadasala, Chenyi Mao, Yaxin Wang, Yongjun Zhang, Huilian Liu, Yanqing Liu, Jinghai Yang, Yongsheng Yan

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Abstract

Ni-doped zinc oxide (Zn1-xNixO, 0 ≤ x ≤ 0.08) diluted magnetic semiconductors have been synthesized by the using a sol-gel method. Structural, magnetic and optical properties of the samples have been studied. The results of X-ray diffraction (XRD), transmission electron microscope (TEM) and X-ray absorption fine structure (XAFS) indicated that Ni ions were substitutionally incorporated into the crystal lattice of ZnO. With Ni concentration increasing up to 2 at.%, all diffraction peaks corresponded to wurtzite structure of ZnO, but for Zn0.97Ni0.03O, secondary phase of NiO emerged. Based on the results of X-ray photoelectron spectroscopy (XPS), Ni incorporated into the ZnO lattice as Ni2+. The produced samples showed good high-Tc (Curie temperature) ferromagnetism. The results of vibrating sample magnetometer (VSM) and photoluminescence (PL) showed that ferromagnetism (FM) of the Ni-doped ZnO nanoparticles originated from the presence of the O vacancy.

Original languageEnglish (US)
Pages (from-to)281-285
Number of pages5
JournalJournal of Alloys and Compounds
Volume604
DOIs
StatePublished - Aug 15 2014

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Ferromagnetism
Structural properties
Magnetic properties
Optical properties
Nanoparticles
Zinc Oxide
X ray absorption
Magnetometers
Curie temperature
Zinc oxide
Crystal lattices
Sol-gel process
Vacancies
Photoluminescence
Electron microscopes
X ray photoelectron spectroscopy
Diffraction
Ions
X ray diffraction
Diluted magnetic semiconductors

Keywords

  • Diluted magnetic semiconductors
  • Magnetic properties
  • Sol-gel method
  • Structure

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Effects of Ni concentration on structural, magnetic and optical properties of Ni-doped ZnO nanoparticles. / Liu, Yang; Liu, Hongbo; Chen, Zhenguo; Kadasala, Naveen; Mao, Chenyi; Wang, Yaxin; Zhang, Yongjun; Liu, Huilian; Liu, Yanqing; Yang, Jinghai; Yan, Yongsheng.

In: Journal of Alloys and Compounds, Vol. 604, 15.08.2014, p. 281-285.

Research output: Contribution to journalArticle

Liu, Y, Liu, H, Chen, Z, Kadasala, N, Mao, C, Wang, Y, Zhang, Y, Liu, H, Liu, Y, Yang, J & Yan, Y 2014, 'Effects of Ni concentration on structural, magnetic and optical properties of Ni-doped ZnO nanoparticles', Journal of Alloys and Compounds, vol. 604, pp. 281-285. https://doi.org/10.1016/j.jallcom.2014.03.079
Liu, Yang ; Liu, Hongbo ; Chen, Zhenguo ; Kadasala, Naveen ; Mao, Chenyi ; Wang, Yaxin ; Zhang, Yongjun ; Liu, Huilian ; Liu, Yanqing ; Yang, Jinghai ; Yan, Yongsheng. / Effects of Ni concentration on structural, magnetic and optical properties of Ni-doped ZnO nanoparticles. In: Journal of Alloys and Compounds. 2014 ; Vol. 604. pp. 281-285.
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AU - Chen, Zhenguo

AU - Kadasala, Naveen

AU - Mao, Chenyi

AU - Wang, Yaxin

AU - Zhang, Yongjun

AU - Liu, Huilian

AU - Liu, Yanqing

AU - Yang, Jinghai

AU - Yan, Yongsheng

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N2 - Ni-doped zinc oxide (Zn1-xNixO, 0 ≤ x ≤ 0.08) diluted magnetic semiconductors have been synthesized by the using a sol-gel method. Structural, magnetic and optical properties of the samples have been studied. The results of X-ray diffraction (XRD), transmission electron microscope (TEM) and X-ray absorption fine structure (XAFS) indicated that Ni ions were substitutionally incorporated into the crystal lattice of ZnO. With Ni concentration increasing up to 2 at.%, all diffraction peaks corresponded to wurtzite structure of ZnO, but for Zn0.97Ni0.03O, secondary phase of NiO emerged. Based on the results of X-ray photoelectron spectroscopy (XPS), Ni incorporated into the ZnO lattice as Ni2+. The produced samples showed good high-Tc (Curie temperature) ferromagnetism. The results of vibrating sample magnetometer (VSM) and photoluminescence (PL) showed that ferromagnetism (FM) of the Ni-doped ZnO nanoparticles originated from the presence of the O vacancy.

AB - Ni-doped zinc oxide (Zn1-xNixO, 0 ≤ x ≤ 0.08) diluted magnetic semiconductors have been synthesized by the using a sol-gel method. Structural, magnetic and optical properties of the samples have been studied. The results of X-ray diffraction (XRD), transmission electron microscope (TEM) and X-ray absorption fine structure (XAFS) indicated that Ni ions were substitutionally incorporated into the crystal lattice of ZnO. With Ni concentration increasing up to 2 at.%, all diffraction peaks corresponded to wurtzite structure of ZnO, but for Zn0.97Ni0.03O, secondary phase of NiO emerged. Based on the results of X-ray photoelectron spectroscopy (XPS), Ni incorporated into the ZnO lattice as Ni2+. The produced samples showed good high-Tc (Curie temperature) ferromagnetism. The results of vibrating sample magnetometer (VSM) and photoluminescence (PL) showed that ferromagnetism (FM) of the Ni-doped ZnO nanoparticles originated from the presence of the O vacancy.

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