Surface of Zn-Mn-O and its role in room temperature ferromagnetism: An XPS analysis
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2010
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The existence of ferromagnetism in Zn-Mn-O semiconductor samples and dependence on the preparation condition were investigated. We systematically examined the samples with manganese concentration ranging from 0 to 10 at.%, prepared by a solid state reaction route using (ZnC(2)O(4)center dot 2H(2)O)(1-x) and (MnC(2)O(4)center dot 2H(2)O)(x) as precursors. Thermal treatment was carried out in air at temperatures ranging from 400 to 900 degrees C. The samples were investigated by X-ray diffraction, transmission electron microscopy, magnetization measurements and XPS spectroscopy. XPS surface composition, chemical analysis and depth profiling were successfully employed on powder revealing the chemical composition at the surface of the grains and underneath. The present investigation suggests that physical properties and observed room temperature ferromagnetism might be due to grain surface effects. It seems that the ferromagnetic phase is correlated with oxygen build up at the surface. (C)... 2010 Elsevier B.V. All rights reserved.
Ključne reči:
ZnO / Magnetic semiconductors / Room temperature ferromagnetism / XPSIzvor:
Applied Surface Science, 2010, 257, 3, 937-943Finansiranje / projekti:
- Slovenian Research Agency [P2-0082]
- Modifikacija, sinteza i analiza nanostrukturnih materijala jonskim snopovima, gama zračenjem i vakuumskim deponovanjem (RS-MESTD-MPN2006-2010-141013)
DOI: 10.1016/j.apsusc.2010.07.096
ISSN: 0169-4332
WoS: 000281941900049
Scopus: 2-s2.0-77956614122
Institucija/grupa
VinčaTY - JOUR AU - Milivojević, Dušan AU - Babić-Stojić, Branka S. AU - Kovač, Janez PY - 2010 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4111 AB - The existence of ferromagnetism in Zn-Mn-O semiconductor samples and dependence on the preparation condition were investigated. We systematically examined the samples with manganese concentration ranging from 0 to 10 at.%, prepared by a solid state reaction route using (ZnC(2)O(4)center dot 2H(2)O)(1-x) and (MnC(2)O(4)center dot 2H(2)O)(x) as precursors. Thermal treatment was carried out in air at temperatures ranging from 400 to 900 degrees C. The samples were investigated by X-ray diffraction, transmission electron microscopy, magnetization measurements and XPS spectroscopy. XPS surface composition, chemical analysis and depth profiling were successfully employed on powder revealing the chemical composition at the surface of the grains and underneath. The present investigation suggests that physical properties and observed room temperature ferromagnetism might be due to grain surface effects. It seems that the ferromagnetic phase is correlated with oxygen build up at the surface. (C) 2010 Elsevier B.V. All rights reserved. T2 - Applied Surface Science T1 - Surface of Zn-Mn-O and its role in room temperature ferromagnetism: An XPS analysis VL - 257 IS - 3 SP - 937 EP - 943 DO - 10.1016/j.apsusc.2010.07.096 ER -
@article{ author = "Milivojević, Dušan and Babić-Stojić, Branka S. and Kovač, Janez", year = "2010", abstract = "The existence of ferromagnetism in Zn-Mn-O semiconductor samples and dependence on the preparation condition were investigated. We systematically examined the samples with manganese concentration ranging from 0 to 10 at.%, prepared by a solid state reaction route using (ZnC(2)O(4)center dot 2H(2)O)(1-x) and (MnC(2)O(4)center dot 2H(2)O)(x) as precursors. Thermal treatment was carried out in air at temperatures ranging from 400 to 900 degrees C. The samples were investigated by X-ray diffraction, transmission electron microscopy, magnetization measurements and XPS spectroscopy. XPS surface composition, chemical analysis and depth profiling were successfully employed on powder revealing the chemical composition at the surface of the grains and underneath. The present investigation suggests that physical properties and observed room temperature ferromagnetism might be due to grain surface effects. It seems that the ferromagnetic phase is correlated with oxygen build up at the surface. (C) 2010 Elsevier B.V. All rights reserved.", journal = "Applied Surface Science", title = "Surface of Zn-Mn-O and its role in room temperature ferromagnetism: An XPS analysis", volume = "257", number = "3", pages = "937-943", doi = "10.1016/j.apsusc.2010.07.096" }
Milivojević, D., Babić-Stojić, B. S.,& Kovač, J.. (2010). Surface of Zn-Mn-O and its role in room temperature ferromagnetism: An XPS analysis. in Applied Surface Science, 257(3), 937-943. https://doi.org/10.1016/j.apsusc.2010.07.096
Milivojević D, Babić-Stojić BS, Kovač J. Surface of Zn-Mn-O and its role in room temperature ferromagnetism: An XPS analysis. in Applied Surface Science. 2010;257(3):937-943. doi:10.1016/j.apsusc.2010.07.096 .
Milivojević, Dušan, Babić-Stojić, Branka S., Kovač, Janez, "Surface of Zn-Mn-O and its role in room temperature ferromagnetism: An XPS analysis" in Applied Surface Science, 257, no. 3 (2010):937-943, https://doi.org/10.1016/j.apsusc.2010.07.096 . .