Temperature-dependent stoichiometric alteration in ZnO:Mn nanostructured thin films for enhanced ferromagnetic response

Usman Ilyas; P. Lee; T. L. Tan; R. Chen; Abdul Waheed Anwar; Sam Zhang; H. D. Sun; R. S. Rawat

doi:10.1016/j.apsusc.2016.06.138

Temperature-dependent stoichiometric alteration in ZnO:Mn nanostructured thin films for enhanced ferromagnetic response

Usman Ilyas
, P. Lee
, T. L. Tan
, R. Chen
, Abdul Waheed Anwar
, Sam Zhang
, H. D. Sun
, R. S. Rawat^*

^*Corresponding author for this work

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

11 Scopus citations

Abstract

The study investigates the effect of in-situ substrate temperature and argon-oxygen ambient gas pressure of pulsed laser deposition facility on material composition, optical quality and magnetic response of ZnO:Mn thin films. Structural and optical analyses revealed the existence of an optimal in-situ substrate temperature (450 °C) at which thin films showed relatively better texture and optical quality with minimum concentration of structural defects. The detailed analysis of Zn 2p _3/2 and O 1s core level XPS spectra revealed that the structural disorder was considerably reduced in thin films after being annealed (in-situ) at substrate temperature of 450 °C. Magnetic measurements revealed the stronger p-d hybridization between oxygen 2p and Mn 3d orbitals in ZnO:Mn thin films being annealed in-situ at 450 °C under Ar:O ₂ admixture of 2.5 mbar subsequently leading to improved ferromagnetic response.

Original language	English
Pages (from-to)	461-468
Number of pages	8
Journal	Applied Surface Science
Volume	387
DOIs	https://doi.org/10.1016/j.apsusc.2016.06.138
State	Published - 30 Nov 2016
Externally published	Yes

Keywords

Ferromagnetism
Photoluminescence,
ZnO:Mn nanostructured thin films

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10.1016/j.apsusc.2016.06.138

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@article{7cab87db8ca54665bf88df7a575094c7,

title = "Temperature-dependent stoichiometric alteration in ZnO:Mn nanostructured thin films for enhanced ferromagnetic response",

abstract = " The study investigates the effect of in-situ substrate temperature and argon-oxygen ambient gas pressure of pulsed laser deposition facility on material composition, optical quality and magnetic response of ZnO:Mn thin films. Structural and optical analyses revealed the existence of an optimal in-situ substrate temperature (450 °C) at which thin films showed relatively better texture and optical quality with minimum concentration of structural defects. The detailed analysis of Zn 2p 3/2 and O 1s core level XPS spectra revealed that the structural disorder was considerably reduced in thin films after being annealed (in-situ) at substrate temperature of 450 °C. Magnetic measurements revealed the stronger p-d hybridization between oxygen 2p and Mn 3d orbitals in ZnO:Mn thin films being annealed in-situ at 450 °C under Ar:O 2 admixture of 2.5 mbar subsequently leading to improved ferromagnetic response.",

keywords = "Ferromagnetism, Photoluminescence,, ZnO:Mn nanostructured thin films",

author = "Usman Ilyas and P. Lee and Tan, \{T. L.\} and R. Chen and Anwar, \{Abdul Waheed\} and Sam Zhang and Sun, \{H. D.\} and Rawat, \{R. S.\}",

note = "Publisher Copyright: {\textcopyright} 2016",

year = "2016",

month = nov,

day = "30",

doi = "10.1016/j.apsusc.2016.06.138",

language = "英语",

volume = "387",

pages = "461--468",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Temperature-dependent stoichiometric alteration in ZnO:Mn nanostructured thin films for enhanced ferromagnetic response

AU - Ilyas, Usman

AU - Lee, P.

AU - Tan, T. L.

AU - Chen, R.

AU - Anwar, Abdul Waheed

AU - Zhang, Sam

AU - Sun, H. D.

AU - Rawat, R. S.

PY - 2016/11/30

Y1 - 2016/11/30

N2 - The study investigates the effect of in-situ substrate temperature and argon-oxygen ambient gas pressure of pulsed laser deposition facility on material composition, optical quality and magnetic response of ZnO:Mn thin films. Structural and optical analyses revealed the existence of an optimal in-situ substrate temperature (450 °C) at which thin films showed relatively better texture and optical quality with minimum concentration of structural defects. The detailed analysis of Zn 2p 3/2 and O 1s core level XPS spectra revealed that the structural disorder was considerably reduced in thin films after being annealed (in-situ) at substrate temperature of 450 °C. Magnetic measurements revealed the stronger p-d hybridization between oxygen 2p and Mn 3d orbitals in ZnO:Mn thin films being annealed in-situ at 450 °C under Ar:O 2 admixture of 2.5 mbar subsequently leading to improved ferromagnetic response.

AB - The study investigates the effect of in-situ substrate temperature and argon-oxygen ambient gas pressure of pulsed laser deposition facility on material composition, optical quality and magnetic response of ZnO:Mn thin films. Structural and optical analyses revealed the existence of an optimal in-situ substrate temperature (450 °C) at which thin films showed relatively better texture and optical quality with minimum concentration of structural defects. The detailed analysis of Zn 2p 3/2 and O 1s core level XPS spectra revealed that the structural disorder was considerably reduced in thin films after being annealed (in-situ) at substrate temperature of 450 °C. Magnetic measurements revealed the stronger p-d hybridization between oxygen 2p and Mn 3d orbitals in ZnO:Mn thin films being annealed in-situ at 450 °C under Ar:O 2 admixture of 2.5 mbar subsequently leading to improved ferromagnetic response.

KW - Ferromagnetism

KW - Photoluminescence,

KW - ZnO:Mn nanostructured thin films

UR - https://www.scopus.com/pages/publications/84978474634

U2 - 10.1016/j.apsusc.2016.06.138

DO - 10.1016/j.apsusc.2016.06.138

M3 - 文章

AN - SCOPUS:84978474634

SN - 0169-4332

VL - 387

SP - 461

EP - 468

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Temperature-dependent stoichiometric alteration in ZnO:Mn nanostructured thin films for enhanced ferromagnetic response

Abstract

Keywords

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