Mossbauer Spectra and Crystallite Size Related Magnetic/Electric Properties of Yb Substituted Zn-Ferrite Nanoparticles
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Autori
Bošković, MarkoPerović, Marija M.
Vučinić-Vasić, Milica
Spasojević, Vojislav
Stojanovic, G.
Antić, Bratislav
Članak u časopisu
Metapodaci
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Influence of thermal-annealing-controlled crystallite size on the magnetic/electric properties of Yb substituted Zn-ferrite nanoparticles (ZnFe1.95Yb0.05O4) is studied, and results of the analysis are presented here. Room temperature Mossbauer spectrum of as-prepared sample shows coexistence of the sextet/doublet structure due to the particle size distribution. The central doublet originating from superparamagnetic relaxations of smaller particles is found to constitute the major fraction of the Fe-57 signal in samples obtained by thermal annealing of as-prepared sample at various temperatures in 300 degrees C-800 degrees C range. The determined quadrupole splitting (QS) parameters are significantly higher compared to corresponding bulk counterpart value and display decreasing trend with the crystallite size increase. The similar to 29 nm-sample, obtained by annealing at 800 degrees C, shows bulk-like properties, both in terms of the observed QS value and observed distribution of iron ...ions within the spinel lattice. Electric resistivity has non-monotonic dependence on crystallite-size, which could be attributed to enhanced disorder in as-prepared material. Partial substitution of iron by ytterbium in Zn-ferrite is found to increase the dielectric constant.
Ključne reči:
Nanoparticles / Ferrites / Mossbauer Spectroscopy / Electric PropertiesIzvor:
Nanoscience and Nanotechnology Letters, 2014, 6, 4, 314-318Finansiranje / projekti:
- Magnetni i radionuklidima obeleženi nanostrukturni materijali za primene u medicini (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45015)
DOI: 10.1166/nnl.2014.1758
ISSN: 1941-4900; 1941-4919
WoS: 000336107400008
Scopus: 2-s2.0-84918511956
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Institucija/grupa
VinčaTY - JOUR AU - Bošković, Marko AU - Perović, Marija M. AU - Vučinić-Vasić, Milica AU - Spasojević, Vojislav AU - Stojanovic, G. AU - Antić, Bratislav PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6005 AB - Influence of thermal-annealing-controlled crystallite size on the magnetic/electric properties of Yb substituted Zn-ferrite nanoparticles (ZnFe1.95Yb0.05O4) is studied, and results of the analysis are presented here. Room temperature Mossbauer spectrum of as-prepared sample shows coexistence of the sextet/doublet structure due to the particle size distribution. The central doublet originating from superparamagnetic relaxations of smaller particles is found to constitute the major fraction of the Fe-57 signal in samples obtained by thermal annealing of as-prepared sample at various temperatures in 300 degrees C-800 degrees C range. The determined quadrupole splitting (QS) parameters are significantly higher compared to corresponding bulk counterpart value and display decreasing trend with the crystallite size increase. The similar to 29 nm-sample, obtained by annealing at 800 degrees C, shows bulk-like properties, both in terms of the observed QS value and observed distribution of iron ions within the spinel lattice. Electric resistivity has non-monotonic dependence on crystallite-size, which could be attributed to enhanced disorder in as-prepared material. Partial substitution of iron by ytterbium in Zn-ferrite is found to increase the dielectric constant. T2 - Nanoscience and Nanotechnology Letters T1 - Mossbauer Spectra and Crystallite Size Related Magnetic/Electric Properties of Yb Substituted Zn-Ferrite Nanoparticles VL - 6 IS - 4 SP - 314 EP - 318 DO - 10.1166/nnl.2014.1758 ER -
@article{ author = "Bošković, Marko and Perović, Marija M. and Vučinić-Vasić, Milica and Spasojević, Vojislav and Stojanovic, G. and Antić, Bratislav", year = "2014", abstract = "Influence of thermal-annealing-controlled crystallite size on the magnetic/electric properties of Yb substituted Zn-ferrite nanoparticles (ZnFe1.95Yb0.05O4) is studied, and results of the analysis are presented here. Room temperature Mossbauer spectrum of as-prepared sample shows coexistence of the sextet/doublet structure due to the particle size distribution. The central doublet originating from superparamagnetic relaxations of smaller particles is found to constitute the major fraction of the Fe-57 signal in samples obtained by thermal annealing of as-prepared sample at various temperatures in 300 degrees C-800 degrees C range. The determined quadrupole splitting (QS) parameters are significantly higher compared to corresponding bulk counterpart value and display decreasing trend with the crystallite size increase. The similar to 29 nm-sample, obtained by annealing at 800 degrees C, shows bulk-like properties, both in terms of the observed QS value and observed distribution of iron ions within the spinel lattice. Electric resistivity has non-monotonic dependence on crystallite-size, which could be attributed to enhanced disorder in as-prepared material. Partial substitution of iron by ytterbium in Zn-ferrite is found to increase the dielectric constant.", journal = "Nanoscience and Nanotechnology Letters", title = "Mossbauer Spectra and Crystallite Size Related Magnetic/Electric Properties of Yb Substituted Zn-Ferrite Nanoparticles", volume = "6", number = "4", pages = "314-318", doi = "10.1166/nnl.2014.1758" }
Bošković, M., Perović, M. M., Vučinić-Vasić, M., Spasojević, V., Stojanovic, G.,& Antić, B.. (2014). Mossbauer Spectra and Crystallite Size Related Magnetic/Electric Properties of Yb Substituted Zn-Ferrite Nanoparticles. in Nanoscience and Nanotechnology Letters, 6(4), 314-318. https://doi.org/10.1166/nnl.2014.1758
Bošković M, Perović MM, Vučinić-Vasić M, Spasojević V, Stojanovic G, Antić B. Mossbauer Spectra and Crystallite Size Related Magnetic/Electric Properties of Yb Substituted Zn-Ferrite Nanoparticles. in Nanoscience and Nanotechnology Letters. 2014;6(4):314-318. doi:10.1166/nnl.2014.1758 .
Bošković, Marko, Perović, Marija M., Vučinić-Vasić, Milica, Spasojević, Vojislav, Stojanovic, G., Antić, Bratislav, "Mossbauer Spectra and Crystallite Size Related Magnetic/Electric Properties of Yb Substituted Zn-Ferrite Nanoparticles" in Nanoscience and Nanotechnology Letters, 6, no. 4 (2014):314-318, https://doi.org/10.1166/nnl.2014.1758 . .