Defect engineered d0 ferromagnetism in tin-doped indium oxide nanostructures and nanocrystalline thin-films

被引：65

作者：

Khan, Gobinda Gopal ^{[1
]}

Ghosh, Shyamsundar ^{[2
]}

Sarkar, Ayan ^{[1
]}

Mandal, Guruprasad ^{[3
]}

Mukherjee, Goutam Dev ^{[3
]}

Manju, Unnikrishnan ^{[4
]}

Banu, Nasrin ^{[5
]}

Dev, Bhupendra Nath ^{[5
]}

机构：

[1] Univ Calcutta, Ctr Res Nanosci & Nanotechnol, Kolkata 700098, India

[2] Bejoy Narayan Mahavidyalaya, Dept Phys, Itachuna 712147, Hooghly, India

[3] Indian Inst Sci Educ & Res, Dept Phys Sci, Kolkata, India

[4] CSIR, Cent Glass & Ceram Res Inst, Mat Characterizat Div, Kolkata 700032, India

[5] Indian Assoc Cultivat Sci, Dept Mat Sci, Kolkata 700032, India

来源：

JOURNAL OF APPLIED PHYSICS | 2015年 / 118卷 / 07期

关键词：

ROOM-TEMPERATURE FERROMAGNETISM; PRISTINE; ORIGIN; PHOTOLUMINESCENCE; PERFORMANCE; MAGNETISM;

D O I：

10.1063/1.4928952

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Origin of unexpected defect engineered room-temperature ferromagnetism observed in tin-doped indium oxide (ITO) nanostructures (Nanowires, Nano-combs) and nanocrystalline thin films fabricated by pulsed laser deposition has been investigated. It is found that the ITO nanostructures prepared under argon environment exhibit strongest ferromagnetic signature as compared to that nanocrystalline thin films grown at oxygen. The evidence of singly ionized oxygen vacancy (V-0(+)) defects, obtained from various spectroscopic measurements, suggests that such V-0(+) defects are mainly responsible for the intrinsic ferromagnetic ordering. The exchange interaction of the defects provides extensive opportunity to tune the room-temperature d(0) ferromagnetism and optical properties of ITOs. (C) 2015 AIP Publishing LLC.

引用

页数：8

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