...
首页> 外文期刊>Physical review >Dielectric, ultraviolet/visible, and Raman spectroscopic investigations of the phase transition sequence in 0.71Pb(Mg_(1/3)Nb_(2/3))O_3-0.29PbTiO_3 crystals
【24h】

Dielectric, ultraviolet/visible, and Raman spectroscopic investigations of the phase transition sequence in 0.71Pb(Mg_(1/3)Nb_(2/3))O_3-0.29PbTiO_3 crystals

机译:介电,紫外/可见和拉曼光谱研究0.71Pb(Mg_(1/3)Nb_(2/3))O_3-0.29PbTiO_3晶体中的相变序列

获取原文
获取原文并翻译 | 示例
           

摘要

The structural changes of 0.71Pb(Mg_(1/3)Nb_(2/3))O_3-0.29PbTiO_3 (PMN-29PT) are studied by dielectric and optical absorption and hard-mode Raman spectroscopy as a function of temperature. In addition to the known phase transitions of this material at 100,110 and 124 ℃ two new transitions at 42 and 60 ℃ are observed in unpoled [lll]-oriented PMN-29PT single crystals. The phase transitions are associated with changes of the dielectric and optical properties arising from small changes of the inherent local symmetry. The experimental results are analyzed theoretically and a model for the temperature-dependent rotation of the spontaneous polarization is proposed. The formation of two new low-temperature phases, at least on a local scale, reflect an underlying polarization rotation path being much more complex than currently believed.
机译:通过介电和光吸收以及硬模拉曼光谱研究了0.71Pb(Mg_(1/3)Nb_(2/3))O_3-0.29PbTiO_3(PMN-29PT)的结构变化随温度的变化。除了该材料在100,110和124℃的已知相变外,在未极化[III]取向的PMN-29PT单晶中还观察到42和60℃的两个新的相变。相变与固有固有对称性的微小变化引起的介电和光学特性的变化有关。从理论上分析了实验结果,并提出了一个随温度变化自发极化的模型。两个新的低温相的形成,至少在局部规模上,反映出下面的极化旋转路径比目前认为的复杂得多。

著录项

  • 来源
    《Physical review》 |2011年第17期|p.174115.1-174115.11|共11页
  • 作者单位

    Institute of Material and Surface Technology, University of Applied Science Kiel, Gernzstr. 3, DE-24149 Kiel, Germany;

    Institute of Material and Surface Technology, University of Applied Science Kiel, Gernzstr. 3, DE-24149 Kiel, Germany;

    Institute of Material and Surface Technology, University of Applied Science Kiel, Gernzstr. 3, DE-24149 Kiel, Germany;

    Institute of Material and Surface Technology, University of Applied Science Kiel, Gernzstr. 3, DE-24149 Kiel, Germany;

    InfraTec GmbH, Gostritzer Str. 61-63, DE-01217 Dresden, Germany;

    IBULE Photonics, 7-39, Songdo dong, Yeonsu-gu, Incheon, 406-840, Republic of Korea;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号