铌掺杂钛酸铋的合成与表征

IF 2.7 4区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2023-05-01 DOI:10.1016/j.bsecv.2021.12.002

G. Hernández-Cuevas , J.R. Leyva Mendoza , P.E. García-Casillas , I. Olivas-Armendariz , P.G. Mani-González , S. Díaz de la Torre , O. Raymond-Herrera , E. Martínez-Guerra , Y. Espinosa-Almeyda , H. Camacho-Montes

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引用次数: 3

摘要

采用溶胶-凝胶法制备了纯钛酸铋陶瓷Bi4Ti3−xNbxO12(Nb−BiT)， x值为0% ~ 2%。球团烧结采用无压烧结(PLS)和火花等离子烧结(SPS)两种方法。拉曼光谱表明钛被铌取代导致了结构的畸变。x射线光电子能谱(XPS)显示了铌在钛酸铋陶瓷结构中的集成。x射线衍射显示没有二次相，并提供线索晶体结构由于SPS技术。通过扫描电子显微镜观察，晶粒的形状和大小受到加入体系的铌的强烈影响。铁电磁滞回线表现出铌和织构对铁电行为的影响。据报道，PLS样品的剩余极化值较高。与PLS相比，由于Nb的不均匀掺入，SPS样品的相对介电常数值更高。

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Synthesis and characterization of niobium doped bismuth titanate

Pure and niobium doped bismuth titanate ceramics ${Bi}_{4} {Ti}_{3 - x} {Nb}_{x} O_{12} (Nb - BiT)$ with $x$ ranging from 0% to 2% are prepared by sol–gel method. Pellets are sintered by pressureless sintering (PLS) and spark plasma sintering (SPS). Raman spectroscopy indicates distortion in the structure due to the substitution of titanium by niobium. X-ray photoelectron spectroscopy (XPS) displays the Nb integration to the bismuth titanate ceramic structure. X-ray diffraction shows no secondary phases and offers clues about crystallographic texturing due to the SPS technique. The shape and size of the grains are strongly influenced by the niobium added to the system as reported by scanning electron microscopy. Ferroelectric hysteresis loops exhibit the effect of the niobium and the texturing on the ferroelectric behavior. Higher values of remanent polarization are reported for PLS samples. In comparison with PLS, higher values of the relative permittivity are reported for SPS samples due to the non-homogeneous incorporation of Nb.

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来源期刊

Boletin de la Sociedad Espanola de Ceramica y Vidrio 工程技术-材料科学：硅酸盐

CiteScore

5.50

自引率

2.90%

发文量

审稿时长

103 days

期刊介绍： The Journal of the Spanish Ceramic and Glass Society publishes scientific articles and communications describing original research and reviews relating to ceramic materials and glasses. The main interests are on novel generic science and technology establishing the relationships between synthesis, processing microstructure and properties of materials. Papers may deal with ceramics and glasses included in any of the conventional categories: structural, functional, traditional, composites and cultural heritage. The main objective of the Journal of the Spanish Ceramic and Glass Society is to sustain a high standard research quality by means of appropriate reviewing procedures.