TY - GEN
T1 - Effects of mn substitution on magnetic properties of zno nanoparticles
AU - Asih, Retno
AU - Dhari, Rosana Martina
AU - Baqiya, Malik Anjelh
AU - Astuti, Fahmi
AU - Harsono, Heru
AU - Saiyasombat, Chatree
AU - Kawamata, Takayuki
AU - Noji, Takashi
AU - Sato, Hidetaka
AU - Kato, Masatsune
AU - Watanabe, Isao
AU - Darminto,
N1 - Funding Information:
We acknowledge the Synchrotron Light Research Institute (Public Organization), SLRI, for provision of beamtime and we would like to thank the staffs of beamline 1.1W for assistance. This work was supported in partial by the Research Grants of Hibah Kompetensi (2016-2018) and the International Research Collaborations and Scientific Publication (2017-2018), DRPM, KEMENRISTEKDIKTI, Indonesia.
Publisher Copyright:
© 2020 Trans Tech Publications Ltd, Switzerland.
PY - 2020
Y1 - 2020
N2 - 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. The study on Mn K-edge XANES spectra of MZO reveals that the oxidation state increases by the 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 the Mn-substitution. Interestingly, the magnetization of MZO also tend to increase as the Mn concentration increases. The M(H) curves exhibit linear (paramagnetic) behavior, showing no evidence of room-temperature ferromagnetism. Our results show that the magnetism of MZO is related to the correlation between the Mn magnetic moment and VO.
AB - 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. The study on Mn K-edge XANES spectra of MZO reveals that the oxidation state increases by the 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 the Mn-substitution. Interestingly, the magnetization of MZO also tend to increase as the Mn concentration increases. The M(H) curves exhibit linear (paramagnetic) behavior, showing no evidence of room-temperature ferromagnetism. Our results show that the magnetism of MZO is related to the correlation between the Mn magnetic moment and VO.
KW - Defect
KW - Magnetization
KW - Oxygen vacancy
KW - XAS
KW - ZnO
UR - http://www.scopus.com/inward/record.url?scp=85090804037&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85090804037&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.855.166
DO - 10.4028/www.scientific.net/KEM.855.166
M3 - Conference contribution
AN - SCOPUS:85090804037
SN - 9783035717044
T3 - Key Engineering Materials
SP - 166
EP - 171
BT - Magnetism and its Application
A2 - Purnama, Budi
A2 - Darminto, null
A2 - Risdiana, null
PB - Trans Tech Publications Ltd
T2 - International Conference on Magnetism and Its Application, ICMIA 2019
Y2 - 20 November 2019 through 21 November 2019
ER -