...
首页> 外文期刊>Crystal growth & design >Synthesis, Structure, and Spectroscopy of Epitaxial EuFeO3 Thin Films
【24h】

Synthesis, Structure, and Spectroscopy of Epitaxial EuFeO3 Thin Films

机译:外延EuFeO3薄膜的合成,结构与光谱

获取原文
获取原文并翻译 | 示例
           

摘要

Rare earth iron perovskites RFeO3, where R is a rare earth cation, exhibit an array of magnetic, catalytic, optical, and electrochemical properties. Here we study EuFeO3 films synthesized by molecular beam epitaxy to improve our understanding of the optical properties of ferrites. A combination of X-ray diffraction, X-ray reflectivity, Rutherford backscattering spectroscopy, and scanning transmission electron microscopy was used to characterize the film structure and cation composition. X-ray absorption spectroscopy confirms the nominal 3+ valence states of Eu and Fe. The optical properties of EuFeO3 were investigated using variable-angle spectroscopic ellipsometry between the photon energies of 1.25 and 5 eV. We find that EuFeO3 is a semiconductor with an onset of optical absorption near 2.5 eV. The absorption spectrum of EuFeO3 is blue-shifted with respect to LaFeO3 films, a result that is attributed to the structural differences between the two materials.
机译:稀土铁钙钛矿RFeO3,其中R是稀土阳离子,表现出一系列的磁性,催化,光学和电化学性质。在这里,我们研究分子束外延合成的EuFeO3薄膜,以增进我们对铁氧体光学特性的理解。 X射线衍射,X射线反射率,卢瑟福背散射光谱和扫描透射电子显微镜的组合被用来表征膜结构和阳离子组成。 X射线吸收光谱证实了Eu和Fe的标称3+价态。 EuFeO3的光学性质使用可变角度光谱椭圆偏振光度法在1.25和5 eV的光子能量之间进行了研究。我们发现EuFeO3是一种半导体,在2.5 eV附近会发生光吸收。 EuFeO3的吸收光谱相对于LaFeO3膜发生了蓝移,这是由于两种材料之间的结构差异所致。

著录项

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