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Magnetic and Electron Spin Relaxation Properties of (GdxY1-x)2O3 (0 ≤ x ≤ 1) Nanoparticles Synthesized by the Combustion Method. Increased Electron Spin Relaxation Times with Increasing Yttrium Content

Gustafsson, Håkan, 1976- (author)
Linköpings universitet,Hälsouniversitetet,Medicinsk radiofysik,Centrum för medicinsk bildvetenskap och visualisering, CMIV
Ahrén, Maria (author)
Linköpings universitet,Molekylär ytfysik och nanovetenskap,Tekniska fakulteten
Söderlind, Fredrik (author)
Linköpings universitet,Kemi,Tekniska fakulteten
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Córdoba Gallego, José M. (author)
Linköpings universitet,Nanostrukturerade material,Tekniska högskolan
Käll, Per-Olov (author)
Linköpings universitet,Fysikalisk Kemi,Tekniska fakulteten
Nordblad, Per (author)
Uppsala Universitet
Westlund, Per-Olof (author)
Umeå universitet,Kemiska institutionen,Umeå Universitet
Uvdal, Kajsa (author)
Linköpings universitet,Molekylär ytfysik och nanovetenskap,Tekniska fakulteten
Engström, Maria, 1958- (author)
Linköpings universitet,Medicinsk radiologi,Centrum för medicinsk bildvetenskap och visualisering, CMIV,Hälsouniversitetet
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 (creator_code:org_t)
2011-03-14
2011
English.
In: The Journal of Physical Chemistry C. - United States : American Chemical Society. - 1932-7447 .- 1932-7455. ; 115:13, s. 5469-5477
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The performance of a magnetic resonance imaging contrast agent (CA) depends on several factors, including the relaxation times of the unpaired electrons in the CA. The electron spin relaxation time may be a key factor for the performance of new CAs, such as nanosized Gd2O3 particles. The aim of this work is, therefore, to study changes in the magnetic susceptibility and the electron spin relaxation time of paramagnetic Gd2O3 nanoparticles diluted with increasing amounts of diamagnetic Y2O3. Nanoparticles of (GdxY1-x)2O3 (0 e x e 1) were prepared by the combustion method and thoroughly characterized (by X-ray di.raction, transmission electron microscopy, thermogravimetry coupled with mass spectroscopy, photoelectron spectroscopy, Fourier transform infrared spectroscopy, and magnetic susceptibility measurements). Changes in the electron spin relaxation time were estimated by observations of the signal line width in electron paramagnetic resonance spectroscopy, and it was found that the line width was dependent on the concentration of yttrium, indicating that diamagnetic Y2O3 may increase the electron spin relaxation time of Gd2O3 nanoparticles.

Subject headings

NATURVETENSKAP  -- Kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

Keyword

NATURAL SCIENCES
NATURVETENSKAP

Publication and Content Type

ref (subject category)
art (subject category)

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