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首页> 外文期刊>Applied Surface Science >Para-ferroelectric phase transition driven by swift heavy-ion irradiation in KTN crystal
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Para-ferroelectric phase transition driven by swift heavy-ion irradiation in KTN crystal

机译：通过Swift重离子照射在KTN晶体中驱动的比率转移阶段过渡

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摘要

We report a novel approach of using swift O5+ ion irradiation to implement para-ferroelectric phase transition in a relaxor ferroelectric KTa0.62Nb0.38O3 (KTN) single crystal. With 15-MeV swift O5+ ion irradiation, a welldefined two-layer structure has been formed in the KTN sample due to the interaction between the O ions and KTN via electronic stopping and the nuclear stopping, respectively. The microstructures in these two layers are characterized by using a micro-Raman (mu-Raman) spectral technique. The significant changes of both spectral intensities and locations in three characteristic Raman peaks suggest that the top layer of the KTN sample due to electronic stopping exists a single-domain-ferroelectric state with a uniform and enhanced polarization orientation along [0 0 1](c) direction. More importantly, we observe the irradiated region can effectively confine the light propagation in the ferroelectric layer, which can be further controlled by external fields. The results are promising for designing new integrated photonic devices.
机译：我们报告了使用SWIFT O5 +离子照射的新方法，以在弛豫铁电KtA0.62NB0.38O3（KTN）单晶中实施对铁电相转变。通过15-MeV Swift O5 +离子照射，由于O离子和KTN通过电子停止和核止动之间的相互作用，在KTN样品中形成了良好的双层结构。这两层的微观结构通过使用微拉曼（MU-RAMAN）光谱技术来表征。三个特征拉曼峰的光谱强度和位置的显着变化表明，由于电子停止引起的KTN样品的顶层存在具有均匀的单域 - 铁电状态，沿[0 01]（C ） 方向。更重要的是，我们观察辐射区域可以有效地限制铁电层中的光传播，这可以通过外部领域进一步控制。结果是设计新的集成光子器件的希望。

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  • 来源
    《Applied Surface Science》 |2020年第jul30期|146261.1-146261.7|共7页
  • 作者

    He Shan; Yang Quanxin; Li Xiaojin; Liu Hongliang; Cao Lei; Akhmadaliev Shavkat; Wang Xuping; Ren Yingying; Zhou Shengqiang; Wu Pengfei;

  • 作者单位

    Nankai Univ Inst Modern Opt Tianjin 300350 Peoples R China;

    Nankai Univ Inst Modern Opt Tianjin 300350 Peoples R China;

    Nankai Univ Inst Modern Opt Tianjin 300350 Peoples R China;

    Nankai Univ Inst Modern Opt Tianjin 300350 Peoples R China|Nankai Univ Tianjin Key Lab Microscale Opt Informat Sci & Tec Tianjin 300350 Peoples R China;

    Helmholtz Zentrum Dresden Rossendorf Inst Ion Beam Phys & Mat Res D-01328 Dresden Germany;

    Helmholtz Zentrum Dresden Rossendorf Inst Ion Beam Phys & Mat Res D-01328 Dresden Germany;

    Qilu Univ Technol Adv Mat Inst Shandong Acad Sci Jinan 250014 Peoples R China;

    Shandong Normal Univ Shandong Prov Engn & Tech Ctr Light Manipulat Sch Phys & Elect Jinan 250358 Peoples R China|Shandong Normal Univ Shandong Prov Key Lab Opt & Photon Device Sch Phys & Elect Jinan 250358 Peoples R China;

    Helmholtz Zentrum Dresden Rossendorf Inst Ion Beam Phys & Mat Res D-01328 Dresden Germany;

    Nankai Univ Inst Modern Opt Tianjin 300350 Peoples R China|Nankai Univ Tianjin Key Lab Optoelect Sensor & Sensing Networ Tianjin 300350 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Phase transition; Swift heavy ion irradiation; Relaxor ferroeletrics;

    机译：相变;SWIFT重离子辐射;松弛剂铁旋;

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