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首页> 外文期刊>ACS applied materials & interfaces >Single-Crystal BiFeO3 Nanoplates with Robust Antiferromagnetism
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Single-Crystal BiFeO3 Nanoplates with Robust Antiferromagnetism

机译：单晶BIFEO3纳米型，具有稳健的反铁磁性

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摘要

Freestanding and single-crystal BiFeO3 (BFO) nanoplates have been successfully synthesized by a fluoride ion assisted hydrothermal method, and the thickness of the nanoplates can be effectively tailored from 80 to 380 nm by the concentration of fluoride ions. It is revealed that BFO nanoplates grew via an oriented attachment :of layer by layer, giving rise: to-the formation Of the inner interface within the nanoplates. In particular; antiferromagnetic (AFM) phase transition temperature (Neel temperature, T-N) of the BFO nanoplates is significantly enhanced from typical 370 to similar to 512 degrees C, whereas the Curie temperature (T-C) of the BFO nanoplates is determined to be similar to 830 degrees C, in good agreement with a bulk value The combination of scanning transmission electron microscopy, electron energy loss spectroscopy, and the first-principle calculations reveals that the interfacial tensile strain remarkably improves the stability of AFM ordering, accounting for the significant enhancement in T-N of BFO plates. Correspondingly, the tensile strain induced the polarization and oxygen octahedral tilting has been observed near the interface. The findings presented here suggest that single-crystal BFO nanoplate is an ideal system for exploring an intrinsic magnetoelectric property, where a tensile strain can be a very promising approach to tailor AFM ordering and polarization rotation for an enhanced coupling effect.
机译：独立式和单晶BIFEO3（BFO）纳米板已成功通过氟离子辅助水热法合成，并且通过氟离子的浓度，纳米板的厚度可以通过80至380nm有效地定制。揭示BFO纳米板通过定向的附件增长：通过层层的层，产生：纳米板内的内接口的形成。特别是; BFO纳米层间的反铁磁（AFM）相变温度（Neel温度，Tn）从典型的370显着增强至类似于512℃，而BFO纳米板的居里温度（Tc）确定类似于830℃与批量值良好的一致性扫描透射电子显微镜，电子能量损失光谱和第一原理计算表明，界面拉伸应变显着提高了AFM订购的稳定性，占BFO TN的显着增强板块。相应地，在界面附近观察到诱导的拉伸应变诱导偏振和氧八面体倾斜。这里提出的发现表明单晶BFO纳米板是探索内在磁电性的理想系统，其中拉伸应变可以是裁缝AFM排序和极化旋转以获得增强的耦合效果的非常有希望的方法。

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  • 作者

    Yang Xin; Zeng RongGuang; Ren ZhaoHui; Wu YanFei; Chen Xing; Li Ming; Chen Jialu; Zhao Ruoyu; Zhou DiKui; Liao ZhiMin; Tian He; Lu YunHao; Li Xiang; Li JiXue; Hang GaoRong;

  • 作者单位

    Zhejiang Univ State Key Lab Silicon Mat Sch Mat Sci &

    Engn Cyrus Tang Ctr Sensor Mat &

    Applicat Hangzhou 310027 Peoples R China;

    Sci &

    Technol Surface Phys &

    Chem Lab POB 718-35 Mianyang 621907 Peoples R China;

    Zhejiang Univ State Key Lab Silicon Mat Sch Mat Sci &

    Engn Cyrus Tang Ctr Sensor Mat &

    Applicat Hangzhou 310027 Peoples R China;

    South Univ Sci &

    Technol China Inst Quantum Sci &

    Engn Shenzhen 518055 Peoples R China;

    Zhejiang Univ Sch Mat Sci &

    Engn Ctr Elect Microscope Hangzhou 310027 Peoples R China;

    Zhejiang Univ State Key Lab Silicon Mat Sch Mat Sci &

    Engn Cyrus Tang Ctr Sensor Mat &

    Applicat Hangzhou 310027 Peoples R China;

    Zhejiang Univ State Key Lab Silicon Mat Sch Mat Sci &

    Engn Cyrus Tang Ctr Sensor Mat &

    Applicat Hangzhou 310027 Peoples R China;

    Zhejiang Univ State Key Lab Silicon Mat Sch Mat Sci &

    Engn Cyrus Tang Ctr Sensor Mat &

    Applicat Hangzhou 310027 Peoples R China;

    Zhejiang Univ State Key Lab Silicon Mat Sch Mat Sci &

    Engn Cyrus Tang Ctr Sensor Mat &

    Applicat Hangzhou 310027 Peoples R China;

    Peking Univ Sch Phys State Key Lab Mesoscop Phys Beijing 100871 Peoples R China;

    Zhejiang Univ Sch Mat Sci &

    Engn Ctr Elect Microscope Hangzhou 310027 Peoples R China;

    Zhejiang Univ State Key Lab Silicon Mat Sch Mat Sci &

    Engn Cyrus Tang Ctr Sensor Mat &

    Applicat Hangzhou 310027 Peoples R China;

    Zhejiang Univ State Key Lab Silicon Mat Sch Mat Sci &

    Engn Cyrus Tang Ctr Sensor Mat &

    Applicat Hangzhou 310027 Peoples R China;

    Zhejiang Univ Sch Mat Sci &

    Engn Ctr Elect Microscope Hangzhou 310027 Peoples R China;

    Zhejiang Univ State Key Lab Silicon Mat Sch Mat Sci &

    Engn Cyrus Tang Ctr Sensor Mat &

    Applicat Hangzhou 310027 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    BiFeO3 nanoplates; fluoride ion-assisted hydrothermal method; interfacial tensile strain; antiferromagnetism;

    机译：BifeO3纳米板;氟离子辅助水热法;界面拉伸应变;反铁磁性;

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