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2018 Volume 27 Issue 5
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Ming Ma, Yan Chen, Yi-Min Cui. 2018: Effect of oxygen content on dielectric characteristics of Cr-doped LaTiOx, Chinese Physics B, 27(5): 492-499. doi: 10.1088/1674-1056/27/5/057702
Citation: Ming Ma, Yan Chen, Yi-Min Cui. 2018: Effect of oxygen content on dielectric characteristics of Cr-doped LaTiOx, Chinese Physics B, 27(5): 492-499. doi: 10.1088/1674-1056/27/5/057702
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Effect of oxygen content on dielectric characteristics of Cr-doped LaTiOx

  • School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China

  • School of Physics, Beihang University, Beijing 100191, China

  • Available Online: 01/01/2018
  • Fund Project: the National Natural Science Foundation of China (Grant 51571006)
  • The ceramics La0.85Cr0.15TiOx and La0.7Cr0.3TiOx are prepared by conventional solid-state reaction method.The dielectric properties of Cr-doped LaTiOx as a function of frequency (0.1 kHz ≤ f ≤ 1 MHz) and temperature (77 K ≤ T ≤360 K) are studied.The blocks are then annealed in a flowing O2 or Ar/H2 to convert their oxygen content and the tests mentioned above are performed.The highly oxygenated samples exhibit extremely high low-frequency dielectric constants at room temperature (～106).The results show that the oxygen stoichiometry could significantly influence the dielectric properties of Cr-doped LaTiOx.
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Effect of oxygen content on dielectric characteristics of Cr-doped LaTiOx

  • Available Online: 01/01/2018

Abstract: The ceramics La0.85Cr0.15TiOx and La0.7Cr0.3TiOx are prepared by conventional solid-state reaction method.The dielectric properties of Cr-doped LaTiOx as a function of frequency (0.1 kHz ≤ f ≤ 1 MHz) and temperature (77 K ≤ T ≤360 K) are studied.The blocks are then annealed in a flowing O2 or Ar/H2 to convert their oxygen content and the tests mentioned above are performed.The highly oxygenated samples exhibit extremely high low-frequency dielectric constants at room temperature (～106).The results show that the oxygen stoichiometry could significantly influence the dielectric properties of Cr-doped LaTiOx.

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