PbNi1/3Nb2/3O3陶瓷的合成、结构及拉曼光谱研究

IF 1.5 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Transactions of the Indian Ceramic Society Pub Date : 2022-07-03 DOI:10.1080/0371750X.2022.2123045

Preeti, Adityanarayan H. Pandey, R. Selvamani, S. M. Gupta, C. Shekhar

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引用次数: 0

摘要

采用单步法和双步法合成了Pb(Ni1/3Nb2/3)O3 (PNN)陶瓷。采用x射线衍射(XRD)和拉曼散射实验对两种方法制备的粉末在不同温度下的相形成和铅过量进行了分析。研究表明，单步法随着焙烧温度的升高，未反应相减少，在1200℃时只剩下不纯的铌酸镍相。在单步法中，添加4 wt%的过量氧化铅可将不纯铌酸镍相浓度从8.9%降低到4.2%。在双步法中，添加2 wt%的过量氧化铅足以去除焦绿镍铌酸盐相。在35 ~ 350 K的温度范围内，XRD显示出纯净的相，表明所形成的相具有稳定性。拉曼研究也证实了纯钙钛矿相的形成。图形抽象

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Synthesis, Structural and Raman Investigations of PbNi1/3Nb2/3O3 Ceramics

The Pb(Ni1/3Nb2/3)O3 (PNN) ceramics was synthesized by two different methods, viz. (i) single step and (ii) double step. Phase formation of powders prepared by both the methods at various temperatures and lead excess were analyzed by X-ray diffraction (XRD) and Raman scattering experiments. The studies revealed that for single step method the unreacted phases diminished with increase of firing temperature and only impure nickel niobate phase remained at 1200°C. Addition of 4 wt% excess lead oxide reduced the impure nickel niobate phase concentration from 8.9% to 4.2% for the single step method. Addition of 2 wt% excess lead oxide was found sufficient to remove pyrochlore nickel niobate phase for double step method. Temperature dependent XRD showed pure phase throughout the temperature range of 35 to 350 K indicating the stability of the phase formed. The Raman study also confirmed the formation of pure perovskite phase. GRAPHICAL ABSTRACT

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来源期刊

Transactions of the Indian Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

2.40

自引率

8.30%

发文量

审稿时长

2.3 months

期刊介绍： Transactions of the Indian Ceramic Society is a quarterly Journal devoted to current scientific research, technology and industry-related news on glass and ceramics. The Journal covers subjects such as the chemical, mechanical, optical, electronic and spectroscopic properties of glass and ceramics, and characterization of materials belonging to this family. The Editor invites original research papers, topical reviews, opinions and achievements, as well as industry profiles for publication. The contributions should be accompanied by abstracts, keywords and other details, as outlined in the Instructions for Authors section. News, views and other comments on activities of specific industries and organizations, and also analyses of industrial scenarios are also welcome.