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Nanoparticles of Ni...
Nanoparticles of Ni/NiO embedded in TiO(2) synthesized by the complex-polymer sol-gel method
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- Karimipour, Masoud (författare)
- Uppsala universitet,Materialfysik
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- Wikberg, J. Magnus (författare)
- Uppsala universitet,Fasta tillståndets fysik
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- Kapaklis, Vassilios (författare)
- Uppsala universitet,Materialfysik
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- Shahtahmasebi, Nasser (författare)
- Dept of Physic, Faculty of Basic Science, and, Nanotechnology Laboratory, Nano Research Center, Ferdowsi University, Mashhad, Iran
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- Abad, Mahmood Rezaee Rokn (författare)
- Dept of Physic, Faculty of Basic Science, and, Nanotechnology Laboratory, Nano Research Center, Ferdowsi University, Mashhad, Iran
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- Yeganeh, Mahboubeh (författare)
- Dept of Physic, Faculty of Basic Science, and, Nanotechnology Laboratory, Nano Research Center, Ferdowsi University, Mashhad, Iran
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- Bagheri-Mohagheghi, M M (författare)
- School of Pphysics, Damghan University, Damghan, Iran
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- Svedlindh, Peter (författare)
- Uppsala universitet,Fasta tillståndets fysik
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(creator_code:org_t)
- 2011-08-09
- 2011
- Engelska.
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Ingår i: Physica Scripta. - : IOP Publishing. - 0031-8949 .- 1402-4896. ; 84:3, s. 035702-
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Ni-doped TiO(2) nanoparticles were synthesized by the non-hydrous complex-polymer sol-gel method. Titanium isopropoxide was used as precursor and acetyl acetone (AcAc) and citric acid were used as polymer and complex agent, respectively. A series of Ni(x) : Ti(1-x)O(2) samples with x = 0.01, 0.03, 0.05 and 0.10 were prepared and subsequently annealed at 400, 600 and 800 degrees C. The structural and magnetic properties of Ni(x) : Ti(1-x)O(2) were studied by means of x-ray diffraction (XRD) and dc magnetometery. Samples annealed at 400 degrees C attained a particle size of 12 nm with structural phases of anatase, rutile and cubic NiO. From the blocking temperatures of the zero-field-cooled and field-cooled measurements, similar particle sizes (as from XRD) were obtained. The presence of ferro- and antiferromagnetic (AFM) interactions further confirms that the particles have different structural compositions. At 800 degrees C the particles have grown to about 30 nm with either a rutile or NiTiO(3)-type structure. The presence of NiTiO(3) is also seen in the magnetic measurements, which show the characteristic AFM peak at 23 K.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Teknisk fysik med inriktning mot fasta tillståndets fysik
- Engineering Science with specialization in Solid State Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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