Improvement on Thermal Stability of Nano-Domains in Lithium Niobate Thin Films

Improvement on Thermal Stability of Nano-Domains in Lithium Niobate Thin Films

We present a simple and effective way to improve the thermal stability of nano-domains written with an atomic force microscope (AFM)-tip voltage in a lithium niobate film on insulator (LNOI). We show that nano-domains in LNOI (whether in the form of stripe domains or dot domains) degraded, or even d...

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Main Authors: Yuejian Jiao, Zhen Shao, Sanbing Li, Xiaojie Wang, Fang Bo, Jingjun Xu, Guoquan Zhang
Format: Article
Language:English
Published: MDPI AG 2020-01-01
Series:Crystals
Subjects:
thermal stability
nano-domain
lnoi
pre-heat treatment
Online Access:https://www.mdpi.com/2073-4352/10/2/74
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spelling doaj-2e963405e7d24739950391e70f5f98b92020-11-25T01:38:06ZengMDPI AGCrystals2073-43522020-01-011027410.3390/cryst10020074cryst10020074Improvement on Thermal Stability of Nano-Domains in Lithium Niobate Thin FilmsYuejian Jiao0Zhen Shao1Sanbing Li2Xiaojie Wang3Fang Bo4Jingjun Xu5Guoquan Zhang6The MOE Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics and TEDA Applied Physics Institute, Nankai University, Tianjin 300457, ChinaThe MOE Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics and TEDA Applied Physics Institute, Nankai University, Tianjin 300457, ChinaThe MOE Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics and TEDA Applied Physics Institute, Nankai University, Tianjin 300457, ChinaThe MOE Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics and TEDA Applied Physics Institute, Nankai University, Tianjin 300457, ChinaThe MOE Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics and TEDA Applied Physics Institute, Nankai University, Tianjin 300457, ChinaThe MOE Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics and TEDA Applied Physics Institute, Nankai University, Tianjin 300457, ChinaThe MOE Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics and TEDA Applied Physics Institute, Nankai University, Tianjin 300457, ChinaWe present a simple and effective way to improve the thermal stability of nano-domains written with an atomic force microscope (AFM)-tip voltage in a lithium niobate film on insulator (LNOI). We show that nano-domains in LNOI (whether in the form of stripe domains or dot domains) degraded, or even disappeared, after a post-poling thermal annealing treatment at a temperature on the order of &#8764;100 <inline-formula> <math display="inline"> <semantics> <msup> <mrow></mrow> <mo>∘</mo> </msup> </semantics> </math> </inline-formula>C. We experimentally confirmed that the thermal stability of nano-domains in LNOI is greatly improved if a pre-heat treatment is carried out for LNOI before the nano-domains are written. This thermal stability improvement of nano-domains is mainly attributed to the generation of a compensating space charge field parallel to the spontaneous polarization of written nano-domains during the pre-heat treatment process.https://www.mdpi.com/2073-4352/10/2/74thermal stabilitynano-domainlnoipre-heat treatment
collection DOAJ
language English
format Article
sources DOAJ
author Yuejian Jiao
Zhen Shao
Sanbing Li
Xiaojie Wang
Fang Bo
Jingjun Xu
Guoquan Zhang
spellingShingle Yuejian Jiao
Zhen Shao
Sanbing Li
Xiaojie Wang
Fang Bo
Jingjun Xu
Guoquan Zhang
Improvement on Thermal Stability of Nano-Domains in Lithium Niobate Thin Films
Crystals
thermal stability
nano-domain
lnoi
pre-heat treatment
author_facet Yuejian Jiao
Zhen Shao
Sanbing Li
Xiaojie Wang
Fang Bo
Jingjun Xu
Guoquan Zhang
author_sort Yuejian Jiao
title Improvement on Thermal Stability of Nano-Domains in Lithium Niobate Thin Films
title_short Improvement on Thermal Stability of Nano-Domains in Lithium Niobate Thin Films
title_full Improvement on Thermal Stability of Nano-Domains in Lithium Niobate Thin Films
title_fullStr Improvement on Thermal Stability of Nano-Domains in Lithium Niobate Thin Films
title_full_unstemmed Improvement on Thermal Stability of Nano-Domains in Lithium Niobate Thin Films
title_sort improvement on thermal stability of nano-domains in lithium niobate thin films
publisher MDPI AG
series Crystals
issn 2073-4352
publishDate 2020-01-01
description We present a simple and effective way to improve the thermal stability of nano-domains written with an atomic force microscope (AFM)-tip voltage in a lithium niobate film on insulator (LNOI). We show that nano-domains in LNOI (whether in the form of stripe domains or dot domains) degraded, or even disappeared, after a post-poling thermal annealing treatment at a temperature on the order of &#8764;100 <inline-formula> <math display="inline"> <semantics> <msup> <mrow></mrow> <mo>∘</mo> </msup> </semantics> </math> </inline-formula>C. We experimentally confirmed that the thermal stability of nano-domains in LNOI is greatly improved if a pre-heat treatment is carried out for LNOI before the nano-domains are written. This thermal stability improvement of nano-domains is mainly attributed to the generation of a compensating space charge field parallel to the spontaneous polarization of written nano-domains during the pre-heat treatment process.
topic thermal stability
nano-domain
lnoi
pre-heat treatment
url https://www.mdpi.com/2073-4352/10/2/74
work_keys_str_mv AT yuejianjiao improvementonthermalstabilityofnanodomainsinlithiumniobatethinfilms
AT zhenshao improvementonthermalstabilityofnanodomainsinlithiumniobatethinfilms
AT sanbingli improvementonthermalstabilityofnanodomainsinlithiumniobatethinfilms
AT xiaojiewang improvementonthermalstabilityofnanodomainsinlithiumniobatethinfilms
AT fangbo improvementonthermalstabilityofnanodomainsinlithiumniobatethinfilms
AT jingjunxu improvementonthermalstabilityofnanodomainsinlithiumniobatethinfilms
AT guoquanzhang improvementonthermalstabilityofnanodomainsinlithiumniobatethinfilms
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