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

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

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.

Original language	English
Article number	022408
Journal	Applied Physics Letters
Volume	101
Issue number	2
DOIs	https://doi.org/10.1063/1.4732094
State	Published - 9 Jul 2012

Access to Document

10.1063/1.4732094

Cite this

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), Article 022408. https://doi.org/10.1063/1.4732094

@article{66f628967bd346b789a7e1cd5e99e86d,

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).",

year = "2012",

month = jul,

day = "9",

doi = "10.1063/1.4732094",

language = "???core.languages.en_GB???",

volume = "101",

journal = "Applied Physics Letters",

issn = "0003-6951",

number = "2",

}

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

AN - SCOPUS:84863895823

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

Abstract

Access to Document

Fingerprint

Cite this

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