首页> 外文期刊>Journal of Crystal Growth >The effect of process parameters on floating zone crystal growth of selected cuprates
【24h】

The effect of process parameters on floating zone crystal growth of selected cuprates

机译:工艺参数对所选铜酸盐浮区晶体生长的影响

获取原文
获取原文并翻译 | 示例
           

摘要

Process parameters for floating zone crystal growth with optical heating were analyzed with special emphasis to the effect of external gas pressure. The cuprates are grown at low velocities ≤1 mm/h and with a traveling solvent floating zone enriched in CuO. Elevated oxygen pressure up to 15 MPa can affect phase equilibria and solidification modes, which enabled crystal growth of various novel compounds, which are not stable at normal pressure. Analyses of quenched zones suggest that crystals grow from oxygen depleted melts. Upon melting at the interface of the feed rod oxygen is released. Undesired formation of gas bubbles in the melt can be partly inhibited by growing under O_2/Ar mixed gas atmosphere. Highly anisotropic antiferromagnetic ordering and strong effects of Ca doping in selected cuprates were revealed on single crystalline samples.
机译:分析了通过光学加热生长的浮区晶体的工艺参数,并特别强调了外部气压的影响。铜酸盐以≤1mm / h的低速生长,并带有富含CuO的流动溶剂漂浮区。升高到15 MPa的氧气压力会影响相平衡和凝固模式,这会导致各种新型化合物的晶体生长,这些化合物在常压下不稳定。淬火区的分析表明,晶体是从贫氧的熔体中生长出来的。在进料杆的界面熔化时,氧气被释放。通过在O_2 / Ar混合气体气氛下生长可以部分抑制熔体中不希望有的气泡形成。在单晶样品上显示出高各向异性的反铁磁有序性和选定的铜酸盐中Ca掺杂的强烈影响。

著录项

  • 来源
    《Journal of Crystal Growth》 |2014年第1期|596-600|共5页
  • 作者单位

    Leibniz Institute for Solid State and Materials Research (IFW) Dresden, D-01171 Dresden, Germany,Kirchhoff Institute for Physics, Heidelberg University, D-69120 Heidelberg, Germany;

    Leibniz Institute for Solid State and Materials Research (IFW) Dresden, D-01171 Dresden, Germany,Kirchhoff Institute for Physics, Heidelberg University, D-69120 Heidelberg, Germany;

    Leibniz Institute for Solid State and Materials Research (IFW) Dresden, D-01171 Dresden, Germany;

    Kirchhoff Institute for Physics, Heidelberg University, D-69120 Heidelberg, Germany;

    Leibniz Institute for Solid State and Materials Research (IFW) Dresden, D-01171 Dresden, Germany;

    Leibniz Institute for Solid State and Materials Research (IFW) Dresden, D-01171 Dresden, Germany;

  • 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
  • 关键词

    A1. Phase equilibria; A2. Floating zone technique; B2. Magnetic materials; B1. Cuprates;

    机译:A1。相平衡;A2。浮动区技术;B2。磁性材料;B1。铜币;

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