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Persistent URL
http://purl.org/net/epubs/work/54072811
Record Status
Checked
Record Id
54072811
Title
Effects of Mn Substitution on Magnetic Properties of ZnO Nanoparticles
Contributors
R Asih
,
RM Dhari
,
MA Baqiya
,
F Astuti
,
H Harsono
,
C Saiyasombat
,
T Kawamata
,
T Noji
,
H Sato
,
M Kato
,
I Watanabe
,
D Darminto
Abstract
Effects of Mn-substitution on magnetic properties of Zn1-xMnxO (MZO) nanoparticles with x= 0.00, 0.03, 0.05 and 0.07 have been investigated along with their local structure. Study on Mn K-edge XANES spectra of MZO reveals that the oxidation state increases by Mn-substitution, which further implies that MZO exhibits a mixed valence state of Mn3+/Mn4+. The local structure analysis on Mn K-edge EXAFS spectra shows that the coordination number (CN) of Mn reduces by increasing Mn concentration, thus the amount of oxygen vacancy (VO) increases by Mn-substitution. Interestingly, the magnetization of MZO also tend to increase as the Mn concentration increases. The M(H) curves exhibit a linear (paramagnetic) behavior, showing no evidence of room-temperature ferromagnetism. Our results show that magnetism of MZO is related to the correlation between Mn magnetic moment and VO.
Organisation
ISIS
,
ISIS-RIKEN
,
ISIS-MUONS
,
STFC
Keywords
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Language
English (EN)
Type
Details
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Year
Journal Article
Key Eng Mater
855 (2020): 166-171.
https://doi.org/1…ific.net/KEM.855.166
2020
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