La0.67Sr0.33MnO3 (LSMO) films were prepared on SrTiO3 single-crystal substrates by the pulsed laser deposition method. X-ray photoelectron spectra (XPS) were measured for the LSMO films as-prepared, annealed in oxygen and in vacuum, respectively. Multiple peaks fitting for Mn 2p3/2 XPS spectra shows that Mn2+ appears and the ratio of Mn3+/Mn4+ increases on the surface of LSMO film annealed in vacuum comparing with the as-prepared film, though the saturation magnetization (Ms) changes little. Mn6+ and Mn7+ can be detected while Mn4+ decreases much on the surface of LSMO film annealed in oxygen. The change of Mn3+/Mn4+ results in the obviously reduce of Ms. O1s spectra show the gradual changes of Mn-O, Sr-O and La-O. Analysis indicates that Mn2+ forms at the surface defects of LSMO films. Annealing in vacuum hardly affects the magnetic property of LSMO films. But annealing in oxygen greatly changes the valence states of Mn, which weakens the magnetic property of LSMO films.
| Published in | International Journal of Materials Science and Applications (Volume 5, Issue 5) |
| DOI | 10.11648/j.ijmsa.20160505.17 |
| Page(s) | 222-227 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2016. Published by Science Publishing Group |
La0.67Sr0.33MnO3 Film, XPS, Annealing, Magnetic Property
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APA Style
Ruikun Pan, Yang Li, Fan Fang, Wanqiang Cao. (2016). Surface Valence States of Mn Ions and Magnetic Properties of La0.67Sr0.33MnO3 Films. International Journal of Materials Science and Applications, 5(5), 222-227. https://doi.org/10.11648/j.ijmsa.20160505.17
ACS Style
Ruikun Pan; Yang Li; Fan Fang; Wanqiang Cao. Surface Valence States of Mn Ions and Magnetic Properties of La0.67Sr0.33MnO3 Films. Int. J. Mater. Sci. Appl. 2016, 5(5), 222-227. doi: 10.11648/j.ijmsa.20160505.17
AMA Style
Ruikun Pan, Yang Li, Fan Fang, Wanqiang Cao. Surface Valence States of Mn Ions and Magnetic Properties of La0.67Sr0.33MnO3 Films. Int J Mater Sci Appl. 2016;5(5):222-227. doi: 10.11648/j.ijmsa.20160505.17
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Download@article{10.11648/j.ijmsa.20160505.17,
author = {Ruikun Pan and Yang Li and Fan Fang and Wanqiang Cao},
title = {Surface Valence States of Mn Ions and Magnetic Properties of La0.67Sr0.33MnO3 Films},
journal = {International Journal of Materials Science and Applications},
volume = {5},
number = {5},
pages = {222-227},
doi = {10.11648/j.ijmsa.20160505.17},
url = {https://doi.org/10.11648/j.ijmsa.20160505.17},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20160505.17},
abstract = {La0.67Sr0.33MnO3 (LSMO) films were prepared on SrTiO3 single-crystal substrates by the pulsed laser deposition method. X-ray photoelectron spectra (XPS) were measured for the LSMO films as-prepared, annealed in oxygen and in vacuum, respectively. Multiple peaks fitting for Mn 2p3/2 XPS spectra shows that Mn2+ appears and the ratio of Mn3+/Mn4+ increases on the surface of LSMO film annealed in vacuum comparing with the as-prepared film, though the saturation magnetization (Ms) changes little. Mn6+ and Mn7+ can be detected while Mn4+ decreases much on the surface of LSMO film annealed in oxygen. The change of Mn3+/Mn4+ results in the obviously reduce of Ms. O1s spectra show the gradual changes of Mn-O, Sr-O and La-O. Analysis indicates that Mn2+ forms at the surface defects of LSMO films. Annealing in vacuum hardly affects the magnetic property of LSMO films. But annealing in oxygen greatly changes the valence states of Mn, which weakens the magnetic property of LSMO films.},
year = {2016}
}
TY - JOUR T1 - Surface Valence States of Mn Ions and Magnetic Properties of La0.67Sr0.33MnO3 Films AU - Ruikun Pan AU - Yang Li AU - Fan Fang AU - Wanqiang Cao Y1 - 2016/10/13 PY - 2016 N1 - https://doi.org/10.11648/j.ijmsa.20160505.17 DO - 10.11648/j.ijmsa.20160505.17 T2 - International Journal of Materials Science and Applications JF - International Journal of Materials Science and Applications JO - International Journal of Materials Science and Applications SP - 222 EP - 227 PB - Science Publishing Group SN - 2327-2643 UR - https://doi.org/10.11648/j.ijmsa.20160505.17 AB - La0.67Sr0.33MnO3 (LSMO) films were prepared on SrTiO3 single-crystal substrates by the pulsed laser deposition method. X-ray photoelectron spectra (XPS) were measured for the LSMO films as-prepared, annealed in oxygen and in vacuum, respectively. Multiple peaks fitting for Mn 2p3/2 XPS spectra shows that Mn2+ appears and the ratio of Mn3+/Mn4+ increases on the surface of LSMO film annealed in vacuum comparing with the as-prepared film, though the saturation magnetization (Ms) changes little. Mn6+ and Mn7+ can be detected while Mn4+ decreases much on the surface of LSMO film annealed in oxygen. The change of Mn3+/Mn4+ results in the obviously reduce of Ms. O1s spectra show the gradual changes of Mn-O, Sr-O and La-O. Analysis indicates that Mn2+ forms at the surface defects of LSMO films. Annealing in vacuum hardly affects the magnetic property of LSMO films. But annealing in oxygen greatly changes the valence states of Mn, which weakens the magnetic property of LSMO films. VL - 5 IS - 5 ER -
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