新型磷酸盐 Ca2NiFe2(PO4)4 的结构和磁性特征

IF 3.4 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR
Sirine El Arni , Loubna Chayal , Fouad Alloun , Mohammed Hadouchi , Abderrazzak Assani , Mohamed Saadi , Mimoun El Marssi , Abdelilah Lahmar , Lahcen El Ammari
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引用次数: 0

摘要

材料化学领域科学家的主要目标之一是探索新的功能材料、发现新的晶体结构并了解其结构-性能关系。本文概述了一种新型正磷酸盐 CaNiFe(PO) 的单晶和粉末合成。晶体学分析表明,这种新合成的磷酸盐具有正交空间群晶格。晶体结构由 PO 四面体组成,通过共享顶点与 Fe1O、Fe2O 和 NiO 多面体相连。这种相互连接形成了一个三维框架,包围着容纳钙阳离子的空腔。采用溶胶-凝胶技术获得了纯粉末。里特维尔德精炼表明,计算和观察到的 X 射线衍射图样之间具有极好的相关性。利用红外光谱和拉曼光谱对这种材料进行了进一步的结构表征,并利用扫描电子显微镜对其进行了形貌表征。磁性测量结果表明,在 T∼8.9 K 和 T∼16.5 K 时存在两个磁性跃迁,表明存在磁沮度,总体上以反铁磁行为为主。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Structural and magnetic insights of the novel phosphate Ca2NiFe2(PO4)4

Structural and magnetic insights of the novel phosphate Ca2NiFe2(PO4)4

One of the primary goals of scientists in the field of materials chemistry is to explore new functional materials, the discovery of new crystal structures and the understanding of their structure-properties relationship. This paper outlines the synthesis of a novel orthophosphate, Ca2NiFe2(PO4)4, in the single crystal and powder forms. The crystallographic analysis reveals that this newly synthesized phosphate exhibits an orthorhombic crystal lattice with the Pbca space group. The crystal structure is composed of PO4 tetrahedra connected to Fe1O6, Fe2O5 and NiO5 polyhedra through shared vertices. This interconnection forms a three-dimensional framework that encloses cavities housing Ca2+ cations. A sol-gel technique was employed to obtain the pure powder. The Rietveld refinement indicates an excellent correlation between the calculated and observed X-ray diffraction patterns. This material was further characterized structurally using infrared and Raman spectroscopy, and morphologically by scanning electron microscopy. The magnetic measurements revealed two magnetic transitions at T1∼8.9 K and T2∼16.5 K suggesting the presence of magnetic frustration with overall dominant antiferromagnetic behavior.

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来源期刊
Solid State Sciences
Solid State Sciences 化学-无机化学与核化学
CiteScore
6.60
自引率
2.90%
发文量
214
审稿时长
27 days
期刊介绍: Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.
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