Influence of hydrogenation on the structural, optical and magnetic properties of Gd-incorporated WO3 nanocomposites synthesised by precipitation method

Q2 Engineering

Materials Research Innovations Pub Date : 2022-07-27 DOI:10.1080/14328917.2022.2101309

H. Ashoor, A. Dakhel

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引用次数: 0

Abstract

ABSTRACT Nanoparticlesof tungsten oxide combined with varying amounts of gadolinium ions were synthesised by a hydrochloric acid-assisted precipitation method. The powders were characterised by ; X-ray fluorescence (XRF), X-ray diffraction (XRD), diffuse reflectance (DRS), and magnetic measurements. The ordinary monoclinic structure of WO3 was transformed into one of its Magneli structures (W32O84) by the incorporation of a tiny Gd ions due to the variation in the local charge neutrality . Different magnetic behaviours of Gd-incorporated W-oxide were observed depending on the synthesis procedure including a hydrogenation. The hydrogenated Gd-incorporated W-oxide has FM-behaviour. However, the created FM properties were severely undermined by increasing the Gd inclusion to more than 1%, which was attributed to the effect of the Gd interionic separations and the minute solubility of Gd in of W-oxide. This study focuses on the conditions necessary to realise the creation of FM in W-oxide by Gd ions incorporation for many applications, such as optical phosphors and catalysts.

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氢化对沉淀法合成的gd掺杂WO3纳米复合材料结构、光学和磁性能的影响

摘要采用盐酸辅助沉淀法合成了与不同量钆离子结合的氧化钨纳米颗粒。粉末的表征为;x射线荧光(XRF)、x射线衍射(XRD)、漫反射(DRS)和磁性测量。由于局部电荷中立性的变化，微小的Gd离子的加入使WO3的单斜结构转变为其Magneli结构之一(W32O84)。gd掺杂w -氧化物的不同磁性行为被观察到取决于合成过程，包括氢化。氢化gd - w -氧化物具有fm行为。然而，当Gd包合量超过1%时，由于Gd离子间分离的影响和Gd在w -氧化物中的微小溶解度，所制备的FM性能受到严重破坏。本研究的重点是在w -氧化物中通过Gd离子掺入产生FM的条件，以实现许多应用，如光学荧光粉和催化剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Research Innovations 工程技术-材料科学：综合

CiteScore

5.20

自引率

0.00%

发文量

审稿时长

2.8 months

期刊介绍： Materials Research Innovations covers all areas of materials research with a particular interest in synthesis, processing, and properties from the nanoscale to the microscale to the bulk. Coverage includes all classes of material – ceramics, metals, and polymers; semiconductors and other functional materials; organic and inorganic materials – alone or in combination as composites. Innovation in composition and processing to impart special properties to bulk materials and coatings, and for innovative applications in technology, represents a strong focus. The journal attempts to balance enduring themes of science and engineering with the innovation provided by such areas of research activity.