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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Existence of internal domains in LixTiy Ni_(1-x-y)O and their effects on dielectric behaviour
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Existence of internal domains in LixTiy Ni_(1-x-y)O and their effects on dielectric behaviour

机译：LixTiy Ni_（1-x-y）O中内部域的存在及其对介电行为的影响

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摘要

The elusive domain structures inside the grains of polycrystalline LixTiyNi_(1-x-y)O (LTNO, with x = 0.05, y = 0.02) were observed by scanning electron microscopy and high-resolution transmission electron microscopy. Impedance spectroscopy (IS) analysis was further explored to explain the behaviour of the charge carriers and dielectric spectra of the LTNO ceramic. An equivalent circuit model has been established to separate domain (D), domain-boundary (DB) and grain boundary (GB) relaxation of LTNO. IS analysis reveals that the domain interior of LTNO is Li modified. The activation energy of D, DB and GB is 0.154 eV, 0.216 eV and 0.423 eV, respectively.
机译：通过扫描电子显微镜和高分辨率透射电子显微镜观察到多晶LixTiyNi_（1-x-y）O（LTNO，x = 0.05，y = 0.02）晶粒内部的难以捉摸的畴结构。进一步探索了阻抗谱（IS）分析来解释LTNO陶瓷的载流子行为和介电谱。已经建立了等效电路模型来分离LTNO的畴（D），畴边界（DB）和晶界（GB）弛豫。 IS分析表明，LTNO的畴内部被Li修饰。 D，DB和GB的活化能分别为0.154 eV，0.216 eV和0.423 eV。

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