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

被引：11

作者：

Ilyas, Usman ^{[1
,2
]}

Lee, P. ^{[1
]}

Tan, T. L. ^{[1
]}

Chen, R. ^{[3
]}

Anwar, Abdul Waheed ^{[2
]}

Zhang, Sam ^{[4
]}

Sun, H. D. ^{[3
]}

Rawat, R. S. ^{[1
]}

机构：

[1] Nanyang Technol Univ, NSSE, NIE, 1 Nanyang Walk, Singapore 637616, Singapore

[2] Univ Engn & Technol, Dept Phys, Lahore 54890, Pakistan

[3] Nanyang Technol Univ, Div Phys & Appl Phys, Singapore 637371, Singapore

[4] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

APPLIED SURFACE SCIENCE | 2016年 / 387卷

关键词：

ZnO:Mn nanostructured thin films; Ferromagnetism; Photoluminescence; MN-DOPED ZNO; OXYGEN PARTIAL-PRESSURE; OPTICAL-PROPERTIES; PHOTOLUMINESCENCE;

D O I：

10.1016/j.apsusc.2016.06.138

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 degrees 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 degrees 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 degrees C under Ar:O-2 admixture of 2.5 mbar subsequently leading to improved ferromagnetic response. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：461 / 468

页数：8

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