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 - 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
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 -