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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >EPR and TGA study of two Zn3Fe4V6O24-x samples prepared by different thermal treatments
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EPR and TGA study of two Zn3Fe4V6O24-x samples prepared by different thermal treatments

机译：通过不同热处理制备的两个Zn3Fe4V6O24-x样品的EPR和TGA研究

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摘要

Two samples of multicomponent vanadate, Zn3Fe4V6O24-x ,compound have been prepared following two different thermal annealing processes. XRD measurements have shown the same values of lattice parameters for both samples. The TGA results indicate the possibility of oxygen deficiency. The EPR g-factor is the same for both samples, but large differences in the EPR amplitude and line width have been recorded. The integrated intensities of EPR lines differ slightly, what indicates a difference in the number of paramagnetic centers in the samples. The oxygen deficiency processes can introduce disorder and thus influence magnetic interactions in a multicomponent vanadate system. As a result, a slight change of technological conditions during sample preparation can cause drastic changes in physical properties and thus influence the application possibilities of this group of compounds. (c) 2006 Elsevier B.V. All rights reserved.
机译：经过两种不同的热退火工艺，制备了两种多组分钒酸盐样品Zn3Fe4V6O24-x。 XRD测量显示两个样品的晶格参数值相同。 TGA结果表明存在缺氧的可能性。两种样品的EPR g因子均相同，但已记录到EPR幅度和线宽的较大差异。 EPR线的积分强度略有不同，这表明样品中顺磁中心的数量有所不同。缺氧过程会引入混乱，从而影响多组分钒酸盐系统中的磁相互作用。结果，样品制备过程中技术条件的细微变化会导致物理性质的急剧变化，从而影响这组化合物的应用可能性。 （c）2006 Elsevier B.V.保留所有权利。

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