Study of the structural, ferroelectric and dielectric properties of BaTiO3 co-doped with Sn4+ and Cr3+

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.2022.03.002
Fernando Daniel Cortés-Vega, Carlos Montero-Tavera, Jose Martin Yañez-Limón
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引用次数: 1

Abstract

In the present work, we studied the effect of Sn4+ and Cr3+ doping on the structural, ferroelectric, and dielectric properties of BaSnxCryTi1−(x+y)O3. The materials were prepared by a combination of high-energy mechanical milling and solid-state reactions. The X-Ray Diffraction (XRD) analysis and Rietveld refinements confirmed the presence of a single tetragonal phase for the pure and doped samples. The SEM study revealed that the microstructure is highly susceptible to the addition of both dopants, causing an evident grain refinement. On the other hand, the addition of Sn4+ and Cr3+ had a strong influence on ferroelectric properties, as observed by the pinching of the ferroelectric hysteresis loops. The addition of Sn4+ increases the remnant and maximum polarization, as the Cr3+ doping promoted the contrary effect. Co-doping with Sn4+ and Cr3+ resulted in a maximum energy storage value of 0.2574 J/cm3 with a efficiency of up to 65%, overcoming the values of pure BT. The relative permittivity of all doped samples remained in values of ∼1000, just a little below the permittivity of pure BT.

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Sn4+和Cr3共掺杂BaTiO3的结构、铁电和介电性能研究+
在本工作中,我们研究了Sn4+和Cr3+掺杂对BaSnxCryTi1−(x+y)O3的结构、铁电和介电性能的影响。这些材料是通过高能机械研磨和固态反应相结合的方法制备的。X射线衍射(XRD)分析和Rietveld精炼证实了纯样品和掺杂样品存在单一四方相。SEM研究表明,微观结构对添加这两种掺杂剂非常敏感,导致明显的晶粒细化。另一方面,Sn4+和Cr3+的加入对铁电性能有很大影响,如通过铁电磁滞回线的收缩所观察到的。Sn4+的加入增加了残余极化和最大极化,而Cr3+的掺杂促进了相反的效果。Sn4+和Cr3+的共掺杂导致最大储能值为0.2574J/cm3,效率高达65%,克服了纯BT的值。所有掺杂样品的相对介电常数保持在~1000的值,仅略低于纯BT的介电常数。
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来源期刊
Boletin de la Sociedad Espanola de Ceramica y Vidrio
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
72
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.
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