Back to Search
Start Over
Properties of Gd2O3 nanoparticles studied by hyperfine interactions and magnetization measurements
- Source :
- AIP Advances, Vol 6, Iss 5, Pp 056112-056112-7 (2016)
- Publication Year :
- 2016
- Publisher :
- AIP Publishing, 2016.
-
Abstract
- The magnetic behavior of Gd2O3 nanoparticles, produced by thermal decomposition method and subsequently annealed at different temperatures, was investigated by magnetization measurements and, at an atomic level, by perturbed γ − γ angular correlation (PAC) spectroscopy measuring hyperfine interactions at 111In(111Cd) probe nuclei. Nanoparticle structure, size and shape were characterized by X-ray diffraction (XRD) and Transmission Electron Microscopy (TEM). Magnetization measurements were carried out to characterize the paramagnetic behavior of the samples. XRD results show that all samples crystallize in the cubic-C form of the bixbyite structure with space group Ia3. TEM images showed that particles annealed at 873 K present particles with highly homogeneous sizes in the range from 5 nm to 10 nm and those annealed at 1273 K show particles with quite different sizes from 5 nm to 100 nm, with a wide size distribution. PAC and magnetization results show that samples annealed at 873 and 1273 K are paramagnetic. Magnetization measurements show no indication of blocking temperatures for all samples down to 2 K and the presence of antiferromagnetic correlations.
- Subjects :
- 010302 applied physics
Materials science
Analytical chemistry
General Physics and Astronomy
Nanoparticle
02 engineering and technology
021001 nanoscience & nanotechnology
Bixbyite
01 natural sciences
lcsh:QC1-999
Condensed Matter::Materials Science
Paramagnetism
Magnetization
0103 physical sciences
Magnetic nanoparticles
Particle size
0210 nano-technology
Spectroscopy
Hyperfine structure
lcsh:Physics
Subjects
Details
- ISSN :
- 21583226
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- AIP Advances
- Accession number :
- edsair.doi.dedup.....7605a03b61edad985f1be9d284f5fc6e
- Full Text :
- https://doi.org/10.1063/1.4943601