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首页> 外文期刊>Journal of Applied Physics >Phase diagram of pseudobinary Pb(Yb_(1/2)Nb_(1/2))O_3-Pb(Sc_(1/2)Nb_(1/2))O_3 ceramic solid solution
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Phase diagram of pseudobinary Pb(Yb_(1/2)Nb_(1/2))O_3-Pb(Sc_(1/2)Nb_(1/2))O_3 ceramic solid solution

机译：伪二元Pb（Yb_（1/2）Nb_（1/2））O_3-Pb（Sc_（1/2）Nb_（1/2））O_3陶瓷固溶体的相图

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摘要

Crystal structure and dielectric properties of (1-x)Pb(Yb_(1/2)Nb_(1/2))O_3-xPb(Sc_(1/2Nb_(1/2)O_3 (PYN_(1-x)PSN_x) (0 ≤ x ≤ 0.60) solid solution have been studied, and its pseudobinary phase diagram has been determined. The low-temperature crystal structure of PYN_(1-x)PSN_x becomes pseudocubic from the PYN's orthothombic with increasing x. Also the x-ray diffraction line intensities ascribed, respectively, to the antiferroelectric (AFE) lattice modulation and the B-site ordering become gradually weaker and then they disappear altogether for x > 0.37. In the PYN-rich composition range (0 ≤ x < 0.37), the paraelectric (PE)-AFE phase transition occurs sharply and its transition temperature remains independent of the applied frequency. However, on further increasing Sc concentration (0.37 < x ≤ 0.60), the dielectric constant versus temperature curve becomes gradually broader and displays a frequency-dependent ferroelectric (FE) relaxor behavior. Particularly near x = 0.37, the frequency-dependent dielectric behavior near the dielectric maximum temperature changes to a frequency-independent one below a specific temperature. Particularly at this composition, this solid solution displays a sequence of PE-metastable AFE-FE-AFE phase transition.
机译：（1-x）Pb（Yb_（1/2）Nb_（1/2））O_3-xPb（Sc_（1 / 2Nb_（1/2）O_3（PYN_（1-x）PSN_x）的晶体结构和介电性能研究了（0≤x≤0.60）固溶体，并确定了其伪二元相图，随着x的增大，PYN_（1-x）PSN_x的低温晶体结构从PYN的正交合成变为伪立方。射线衍射线强度分别归因于反铁电（AFE）晶格调制和B位置有序逐渐减弱，然后在x> 0.37时完全消失。在富含PYN的成分范围内（0≤x <0.37），顺电（PE）-AFE的相变急剧发生，其转变温度与施加频率无关，但是，随着Sc浓度的进一步增加（0.37

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  • 来源
    《Journal of Applied Physics》 |2005年第1期|p.013527.1-013527.6|共6页
  • 作者

    J.-H. Kim; H. Kim; W. K. Choo; K. S. Koh; N. Setter;

  • 作者单位

    Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1 Gusong-Dong, Yusong-Gu, Taejon, Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用物理学;
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