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首页> 外文期刊>Physica, B. Condensed Matter >Radio-frequency (RF) studies of the magneto-dielectric composites: Cr0.75Fe1.25O3 (CRFO)-Fe0.5Cu0.75Ti0.75O3 (FCTO)
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Radio-frequency (RF) studies of the magneto-dielectric composites: Cr0.75Fe1.25O3 (CRFO)-Fe0.5Cu0.75Ti0.75O3 (FCTO)

机译：磁电介质复合材料的射频（RF）研究：Cr0.75Fe1.25O3（CRFO）-Fe0.5Cu0.75Ti0.75O3（FCTO）

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This paper concerns a study about the electrical properties of Cr0.75Fe1.25O3 (CRFO)/Fe0.5Cu0.75Ti0.75O3 (FCTO) magneto-dielectric composites. These compounds were prepared by the conventional solid-state reaction synthesis. The samples synthesized, as well their two-phase composites [Cr0.75Fe1.25O3](z)-[Fe0.5Cu0.75Ti0.75O3](100-Z) (Z= 17, 34, 50, 66, 83), were characterized by X-ray powder diffraction technique (XRD). Rietveld's method was employed to verify the quantitative phase abundances in the composites' and their theoretical densities, which were compared with the experimental densities (pycnometer method). To predict the effect of the phases in the composites effective dielectric function (kappa), traditional dielectric mixing models such as parallel, series, and Lichtenecker's model were observed. An alternative approach, a sigmoidal fitting function based on the Boltzmann equation, was proposed to fit the experimental data. (C) 2008 Elsevier B.V. All rights reserved.
机译：本文涉及对Cr0.75Fe1.25O3（CRFO）/Fe0.5Cu0.75Ti0.75O3（FCTO）磁电复合材料的电性能的研究。这些化合物通过常规的固态反应合成来制备。合成了样品及其两相复合物[Cr0.75Fe1.25O3]（z）-[Fe0.5Cu0.75Ti0.75O3]（100-Z）（Z = 17，34，50，66，83），用X射线粉末衍射技术（XRD）表征。采用Rietveld方法验证复合材料中的定量相丰度及其理论密度，并将其与实验密度（比重瓶法）进行比较。为了预测各相在复合材料有效介电函数（kappa）中的影响，观察了传统的介电混合模型，例如并联，串联和Lichtenecker模型。提出了另一种方法，即基于Boltzmann方程的S形拟合函数来拟合实验数据。 （C）2008 Elsevier B.V.保留所有权利。

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