Journal of Superconductivity and Novel Magnetism

, Volume 32, Issue 2, pp 253–260 | Cite as

Investigation to the Structural, Optical, and Magnetic Properties of Synthesized Ni-Doped Anatase Nanoparticles: Essential Role of Treatment in Hydrogen on Long-Range Ferromagnetic Order

  • A. A. DakhelEmail author
  • H. Hamad
  • Adnan Jaafar
Original Research


Nanocomposite powders of anatase TiO2 doped with Ni ions (TiO2:Ni) were synthesized by facile thermal co-decomposition of a mixture of metals complexes. The X-ray diffraction (XRD) analyses using the Rietveld method confirm the formation of almost single nanocrystalline anatase structure. Anatase TiO2 incorporated with Ni ions (TiO2:Ni) illustrated the formation of a substitutional solid solutions (SSS). The diffuse reflection spectroscopy (DRS) method used to study the optical properties of the prepared samples revealed a redshift associated with Ni doping and hydrogenation, which is explained by the creation of point defects including O-vacancies. This study showed the essential importance of hydrogenation process in order to create or boost room-temperature ferromagnetism (RT-FM). The magnetic measurements indicated that anatase TiO2 doped with 4.8 mol% Ni produce a magnetic saturation of 0.84 emu/g, which is a remarkable result compared with that related to the similar studies on doped TiO2.


Ni-doped TiO2 Room-temperature ferromagnetism Hydrogenation 


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Authors and Affiliations

  1. 1.Department of Physics, College of ScienceUniversity of BahrainZallaqKingdom of Bahrain
  2. 2.University of Abu DhabiAbu DhabiUnited Arab Emirates

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