Correlation between oxygen vacancies and magnetism in Mn-doped Y 2O 3 nanocrystals investigated by defect engineering techniques

T. S. Wu; Y. C. Chen; Y. F. Shiu; H. J. Peng; S. L. Chang; H. Y. Lee; P. P. Chu; C. W. Hsu; L. J. Chou; C. W. Pao; J. F. Lee; J. Kwo; M. Hong; Y. L. Soo

doi:10.1063/1.4732094

Correlation between oxygen vacancies and magnetism in Mn-doped Y ₂O ₃ nanocrystals investigated by defect engineering techniques

T. S. Wu, Y. C. Chen, Y. F. Shiu, H. J. Peng, S. L. Chang, H. Y. Lee, P. P. Chu, C. W. Hsu, L. J. Chou, C. W. Pao, J. F. Lee, J. Kwo, M. Hong, Y. L. Soo

化學學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

8 引文斯高帕斯（Scopus）

摘要

Defect engineering techniques have been employed to generate and remove oxygen vacancy defects in nanoparticles of Y ₂O ₃:Mn diluted magnetic oxide (DMO). These samples were prepared by thermal decomposition method followed by a series of thermal annealing in oxygen and forming gas. The x-ray absorption analysis reveals that O vacancies surrounding Mn and Y atoms were appreciably increased by forming-gas-annealing and decreased by oxygen-annealing, accompanied by enhanced and reduced saturation magnetization as demonstrated by magnetic measurements, respectively. Our results demonstrate strong correlation between magnetism and O vacancies and therefore strongly support the bound magnetic polaron model for these high-k DMOs.

原文	???core.languages.en_GB???
文章編號	022408
期刊	Applied Physics Letters
卷	101
發行號	2
DOIs	https://doi.org/10.1063/1.4732094
出版狀態	已出版 - 9 7月 2012

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10.1063/1.4732094

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Wu, T. S., Chen, Y. C., Shiu, Y. F., Peng, H. J., Chang, S. L., Lee, H. Y., Chu, P. P., Hsu, C. W., Chou, L. J., Pao, C. W., Lee, J. F., Kwo, J., Hong, M., & Soo, Y. L. (2012). Correlation between oxygen vacancies and magnetism in Mn-doped Y ₂O ₃ nanocrystals investigated by defect engineering techniques. Applied Physics Letters, 101(2), 文章 022408. https://doi.org/10.1063/1.4732094

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title = "Correlation between oxygen vacancies and magnetism in Mn-doped Y 2O 3 nanocrystals investigated by defect engineering techniques",

abstract = "Defect engineering techniques have been employed to generate and remove oxygen vacancy defects in nanoparticles of Y 2O 3:Mn diluted magnetic oxide (DMO). These samples were prepared by thermal decomposition method followed by a series of thermal annealing in oxygen and forming gas. The x-ray absorption analysis reveals that O vacancies surrounding Mn and Y atoms were appreciably increased by forming-gas-annealing and decreased by oxygen-annealing, accompanied by enhanced and reduced saturation magnetization as demonstrated by magnetic measurements, respectively. Our results demonstrate strong correlation between magnetism and O vacancies and therefore strongly support the bound magnetic polaron model for these high-k DMOs.",

author = "Wu, {T. S.} and Chen, {Y. C.} and Shiu, {Y. F.} and Peng, {H. J.} and Chang, {S. L.} and Lee, {H. Y.} and Chu, {P. P.} and Hsu, {C. W.} and Chou, {L. J.} and Pao, {C. W.} and Lee, {J. F.} and J. Kwo and M. Hong and Soo, {Y. L.}",

note = "Funding Information: The present research has been supported by National Science Council, Taiwan (Project No. 100-2112-M-007-015-MY3) and by Academia Sinica (Project No. AS-98-TP-A03).",

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day = "9",

doi = "10.1063/1.4732094",

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volume = "101",

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TY - JOUR

T1 - Correlation between oxygen vacancies and magnetism in Mn-doped Y 2O 3 nanocrystals investigated by defect engineering techniques

AU - Wu, T. S.

AU - Chen, Y. C.

AU - Shiu, Y. F.

AU - Peng, H. J.

AU - Chang, S. L.

AU - Lee, H. Y.

AU - Chu, P. P.

AU - Hsu, C. W.

AU - Chou, L. J.

AU - Pao, C. W.

AU - Lee, J. F.

AU - Kwo, J.

AU - Hong, M.

AU - Soo, Y. L.

N1 - Funding Information: The present research has been supported by National Science Council, Taiwan (Project No. 100-2112-M-007-015-MY3) and by Academia Sinica (Project No. AS-98-TP-A03).

PY - 2012/7/9

Y1 - 2012/7/9

N2 - Defect engineering techniques have been employed to generate and remove oxygen vacancy defects in nanoparticles of Y 2O 3:Mn diluted magnetic oxide (DMO). These samples were prepared by thermal decomposition method followed by a series of thermal annealing in oxygen and forming gas. The x-ray absorption analysis reveals that O vacancies surrounding Mn and Y atoms were appreciably increased by forming-gas-annealing and decreased by oxygen-annealing, accompanied by enhanced and reduced saturation magnetization as demonstrated by magnetic measurements, respectively. Our results demonstrate strong correlation between magnetism and O vacancies and therefore strongly support the bound magnetic polaron model for these high-k DMOs.

AB - Defect engineering techniques have been employed to generate and remove oxygen vacancy defects in nanoparticles of Y 2O 3:Mn diluted magnetic oxide (DMO). These samples were prepared by thermal decomposition method followed by a series of thermal annealing in oxygen and forming gas. The x-ray absorption analysis reveals that O vacancies surrounding Mn and Y atoms were appreciably increased by forming-gas-annealing and decreased by oxygen-annealing, accompanied by enhanced and reduced saturation magnetization as demonstrated by magnetic measurements, respectively. Our results demonstrate strong correlation between magnetism and O vacancies and therefore strongly support the bound magnetic polaron model for these high-k DMOs.

UR - http://www.scopus.com/inward/record.url?scp=84863895823&partnerID=8YFLogxK

U2 - 10.1063/1.4732094

DO - 10.1063/1.4732094

M3 - 期刊論文

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SN - 0003-6951

VL - 101

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 2

M1 - 022408

ER -

Correlation between oxygen vacancies and magnetism in Mn-doped Y 2O 3 nanocrystals investigated by defect engineering techniques

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Correlation between oxygen vacancies and magnetism in Mn-doped Y ₂O ₃ nanocrystals investigated by defect engineering techniques