Fabrication of vertically aligned ferromagnetic ZnO nanopillar arrays on sapphire substrates by polymer-assisted deposition

Fabrication of vertically aligned ferromagnetic ZnO nanopillar arrays on sapphire substrates by polymer-assisted deposition

Vertically aligned ferromagnetic ZnO nanopillar arrays have been fabricated on single-crystal sapphire substrates through polymer-assisted deposition. X-ray diffraction and transmission electron microscopy analysis show that the arrays are ZnO hexagonal crystal structure along the c-axial direction....

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Main Authors: Jia Luo, Hongtao Ren, Xi Zhang, Gang Xiang
Format: Article
Language:English
Published: AIP Publishing LLC 2020-01-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.5135332
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spelling doaj-4f0310a26a7d46fb8997ef472eccece12020-11-24T23:54:10ZengAIP Publishing LLCAIP Advances2158-32262020-01-01101015337015337-410.1063/1.5135332Fabrication of vertically aligned ferromagnetic ZnO nanopillar arrays on sapphire substrates by polymer-assisted depositionJia Luo0Hongtao Ren1Xi Zhang2Gang Xiang3School of Physical Science and Technology, Key Laboratory of Advanced Technology of Materials Ministry of Education of China, Southwest Jiaotong University, Chengdu 610031, ChinaCollege of Physics, Sichuan University, Chengdu 610064, ChinaCollege of Physics, Sichuan University, Chengdu 610064, ChinaCollege of Physics, Sichuan University, Chengdu 610064, ChinaVertically aligned ferromagnetic ZnO nanopillar arrays have been fabricated on single-crystal sapphire substrates through polymer-assisted deposition. X-ray diffraction and transmission electron microscopy analysis show that the arrays are ZnO hexagonal crystal structure along the c-axial direction. The existence of room temperature ferromagnetism of the arrays was confirmed by the superconducting quantum interference device measurements. The enhancement of ferromagnetism in ZnO nanopillar arrays is found to be correlated with the increase in Zn1− vacancies and the decrease in oxygen interstitials, which was shown by photoluminescence measurements of the samples. Our results provide a viable way to fabricate ferromagnetic vertical arrays of ZnO nanopillars.http://dx.doi.org/10.1063/1.5135332
collection DOAJ
language English
format Article
sources DOAJ
author Jia Luo
Hongtao Ren
Xi Zhang
Gang Xiang
spellingShingle Jia Luo
Hongtao Ren
Xi Zhang
Gang Xiang
Fabrication of vertically aligned ferromagnetic ZnO nanopillar arrays on sapphire substrates by polymer-assisted deposition
AIP Advances
author_facet Jia Luo
Hongtao Ren
Xi Zhang
Gang Xiang
author_sort Jia Luo
title Fabrication of vertically aligned ferromagnetic ZnO nanopillar arrays on sapphire substrates by polymer-assisted deposition
title_short Fabrication of vertically aligned ferromagnetic ZnO nanopillar arrays on sapphire substrates by polymer-assisted deposition
title_full Fabrication of vertically aligned ferromagnetic ZnO nanopillar arrays on sapphire substrates by polymer-assisted deposition
title_fullStr Fabrication of vertically aligned ferromagnetic ZnO nanopillar arrays on sapphire substrates by polymer-assisted deposition
title_full_unstemmed Fabrication of vertically aligned ferromagnetic ZnO nanopillar arrays on sapphire substrates by polymer-assisted deposition
title_sort fabrication of vertically aligned ferromagnetic zno nanopillar arrays on sapphire substrates by polymer-assisted deposition
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2020-01-01
description Vertically aligned ferromagnetic ZnO nanopillar arrays have been fabricated on single-crystal sapphire substrates through polymer-assisted deposition. X-ray diffraction and transmission electron microscopy analysis show that the arrays are ZnO hexagonal crystal structure along the c-axial direction. The existence of room temperature ferromagnetism of the arrays was confirmed by the superconducting quantum interference device measurements. The enhancement of ferromagnetism in ZnO nanopillar arrays is found to be correlated with the increase in Zn1− vacancies and the decrease in oxygen interstitials, which was shown by photoluminescence measurements of the samples. Our results provide a viable way to fabricate ferromagnetic vertical arrays of ZnO nanopillars.
url http://dx.doi.org/10.1063/1.5135332
work_keys_str_mv AT jialuo fabricationofverticallyalignedferromagneticznonanopillararraysonsapphiresubstratesbypolymerassisteddeposition
AT hongtaoren fabricationofverticallyalignedferromagneticznonanopillararraysonsapphiresubstratesbypolymerassisteddeposition
AT xizhang fabricationofverticallyalignedferromagneticznonanopillararraysonsapphiresubstratesbypolymerassisteddeposition
AT gangxiang fabricationofverticallyalignedferromagneticznonanopillararraysonsapphiresubstratesbypolymerassisteddeposition
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