Analysis of magnetic and structural properties in La<inf>0.6</inf>Sr<inf>0.4</inf>MnO<inf>3</inf>ferromagnetic particles under the influence of mechanical ball milling effect

G. Campillo, A. Gil, O. Arnache, J. J. Beltrán, J. Osorio, G. Sierra

Resultado de la investigación: Contribución a una conferenciaArtículoInvestigación

4 Citas (Scopus)

Resumen

We have investigated the magnetic, structural and morphological properties of La0.6Sr0.4MnO3 (LSMO-40) manganite particles, synthesized by solid state reaction method. The resulting LSMO-40 powders were milled in air atmosphere during 3, 6 and 12 hours, by using a planetary ball milling. Samples obtained were characterized by X-ray diffraction, scanning electron microscopy-SEM and magnetization measurements as a function of temperature and magnetic field. A Rietveld analysis was carried on each XRD pattern, and was observed a reduction in crystallite average size (Dv) with increased ball milling time, tM. This is associated with a decrease in particle size. A characteristic rhombohedral crystal structure for the LSMO-40 phase was identified (space group R3C), independent of the milling time of the powders. However, from SEM microstructure was observed more homogeneity in the grain distribution by milling process. The results of magnetic characterization, showed that samples with higher tM (smaller grain size), presented the lowest value of the saturation magnetization, which is attributed to surface effects that induce magnetically disordered states with decreasing particle sizes. This magnetic anisotropy surface is evidenced also on the changes of coercive fields, HC, measured at low temperatures, which increased with increasing tM.
Idioma originalInglés estadounidense
DOI
EstadoPublicada - 1 ene 2013
EventoJournal of Physics: Conference Series -
Duración: 1 ene 2013 → …

Conferencia

ConferenciaJournal of Physics: Conference Series
Período1/01/13 → …

Huella dactilar

balls
magnetic properties
scanning electron microscopy
magnetization
homogeneity
temperature distribution
grain size
solid state
saturation
atmospheres
microstructure
anisotropy
crystal structure
air
diffraction
magnetic fields
x rays

Citar esto

Campillo, G. ; Gil, A. ; Arnache, O. ; Beltrán, J. J. ; Osorio, J. ; Sierra, G. / Analysis of magnetic and structural properties in La<inf>0.6</inf>Sr<inf>0.4</inf>MnO<inf>3</inf>ferromagnetic particles under the influence of mechanical ball milling effect. Papel presentado en Journal of Physics: Conference Series, .
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title = "Analysis of magnetic and structural properties in La0.6Sr0.4MnO3ferromagnetic particles under the influence of mechanical ball milling effect",
abstract = "We have investigated the magnetic, structural and morphological properties of La0.6Sr0.4MnO3 (LSMO-40) manganite particles, synthesized by solid state reaction method. The resulting LSMO-40 powders were milled in air atmosphere during 3, 6 and 12 hours, by using a planetary ball milling. Samples obtained were characterized by X-ray diffraction, scanning electron microscopy-SEM and magnetization measurements as a function of temperature and magnetic field. A Rietveld analysis was carried on each XRD pattern, and was observed a reduction in crystallite average size (Dv) with increased ball milling time, tM. This is associated with a decrease in particle size. A characteristic rhombohedral crystal structure for the LSMO-40 phase was identified (space group R3C), independent of the milling time of the powders. However, from SEM microstructure was observed more homogeneity in the grain distribution by milling process. The results of magnetic characterization, showed that samples with higher tM (smaller grain size), presented the lowest value of the saturation magnetization, which is attributed to surface effects that induce magnetically disordered states with decreasing particle sizes. This magnetic anisotropy surface is evidenced also on the changes of coercive fields, HC, measured at low temperatures, which increased with increasing tM.",
author = "G. Campillo and A. Gil and O. Arnache and Beltr{\'a}n, {J. J.} and J. Osorio and G. Sierra",
year = "2013",
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Analysis of magnetic and structural properties in La<inf>0.6</inf>Sr<inf>0.4</inf>MnO<inf>3</inf>ferromagnetic particles under the influence of mechanical ball milling effect. / Campillo, G.; Gil, A.; Arnache, O.; Beltrán, J. J.; Osorio, J.; Sierra, G.

2013. Papel presentado en Journal of Physics: Conference Series, .

Resultado de la investigación: Contribución a una conferenciaArtículoInvestigación

TY - CONF

T1 - Analysis of magnetic and structural properties in La0.6Sr0.4MnO3ferromagnetic particles under the influence of mechanical ball milling effect

AU - Campillo, G.

AU - Gil, A.

AU - Arnache, O.

AU - Beltrán, J. J.

AU - Osorio, J.

AU - Sierra, G.

PY - 2013/1/1

Y1 - 2013/1/1

N2 - We have investigated the magnetic, structural and morphological properties of La0.6Sr0.4MnO3 (LSMO-40) manganite particles, synthesized by solid state reaction method. The resulting LSMO-40 powders were milled in air atmosphere during 3, 6 and 12 hours, by using a planetary ball milling. Samples obtained were characterized by X-ray diffraction, scanning electron microscopy-SEM and magnetization measurements as a function of temperature and magnetic field. A Rietveld analysis was carried on each XRD pattern, and was observed a reduction in crystallite average size (Dv) with increased ball milling time, tM. This is associated with a decrease in particle size. A characteristic rhombohedral crystal structure for the LSMO-40 phase was identified (space group R3C), independent of the milling time of the powders. However, from SEM microstructure was observed more homogeneity in the grain distribution by milling process. The results of magnetic characterization, showed that samples with higher tM (smaller grain size), presented the lowest value of the saturation magnetization, which is attributed to surface effects that induce magnetically disordered states with decreasing particle sizes. This magnetic anisotropy surface is evidenced also on the changes of coercive fields, HC, measured at low temperatures, which increased with increasing tM.

AB - We have investigated the magnetic, structural and morphological properties of La0.6Sr0.4MnO3 (LSMO-40) manganite particles, synthesized by solid state reaction method. The resulting LSMO-40 powders were milled in air atmosphere during 3, 6 and 12 hours, by using a planetary ball milling. Samples obtained were characterized by X-ray diffraction, scanning electron microscopy-SEM and magnetization measurements as a function of temperature and magnetic field. A Rietveld analysis was carried on each XRD pattern, and was observed a reduction in crystallite average size (Dv) with increased ball milling time, tM. This is associated with a decrease in particle size. A characteristic rhombohedral crystal structure for the LSMO-40 phase was identified (space group R3C), independent of the milling time of the powders. However, from SEM microstructure was observed more homogeneity in the grain distribution by milling process. The results of magnetic characterization, showed that samples with higher tM (smaller grain size), presented the lowest value of the saturation magnetization, which is attributed to surface effects that induce magnetically disordered states with decreasing particle sizes. This magnetic anisotropy surface is evidenced also on the changes of coercive fields, HC, measured at low temperatures, which increased with increasing tM.

U2 - 10.1088/1742-6596/466/1/012022

DO - 10.1088/1742-6596/466/1/012022

M3 - Paper

ER -