Improving of structural, conduction mechanisms, dielectric, optical properties of the sol–gel produced half-doped La0.5Ba0.5CrO3 perovskite for electronics devices, non-linear optical and optoelectronic applications

IF 2.5 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Fakher Hcini, Jabeur Khelifi, Kamel Khirouni
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引用次数: 0

Abstract

The objective of this work is to investigate the structural, optical, electrical, magnetic and dielectric properties of the sol–gel produced half-doped La0.5Ba0.5CrO3 perovskite. Rietveld analysis of X-ray diffraction measurement confirms its orthorhombic structure with the Pnma space group. The pattern reveals uniform crystallization of the produced powder, demonstrating a pure phase with no additional phases. It is apparent that the crystalline grain size grows when adding Ba2+ ion into the parent LaCrO3 sample. Besides, the Eg value of La0.5Ba0.5CrO3 sample is lower compared to the parent LaCrO3 perovskite. It is apparent that the incorporation of Ba+2 element in LaCrO3 sample clearly lowers its band gap energy, which improved its optoelectronic properties. Based to the experimental refractive index, numerous theoretical optical characteristics like reflection loss (RL), molar refractive index (Rm), molar electronic polarizability (αm), and the non-linear optical features were examined for our sample. We employ an altered conduction relation referenced by Jonscher, to analyses the σ(f, T) data for our sample. It is found that our compound presents significant electrical resistivity, this renders them useful for microwave applications that needed minimal eddy currents. The investigation of electronic transport properties revealed a semiconductor behavior in the specimen, aligning with the correlated barrier hopping mechanism (CBH) and the Non-Overlapping Small Polaron Tunneling (NSPT) model.

改善溶胶-凝胶法制备的半掺杂La0.5Ba0.5CrO3钙钛矿的结构、导电机理、介电性能、光学性能,用于电子器件、非线性光学和光电子应用
研究了溶胶-凝胶法制备的半掺杂La0.5Ba0.5CrO3钙钛矿的结构、光学、电学、磁学和介电性能。x射线衍射测量的Rietveld分析证实了其与Pnma空间群的正交结构。图案显示出生产的粉末均匀结晶,显示出一个纯相,没有额外的相。在母体LaCrO3样品中加入Ba2+离子后,晶粒尺寸明显增大。此外,La0.5Ba0.5CrO3样品的Eg值比母矿LaCrO3钙钛矿低。结果表明,Ba+2元素的掺入明显降低了LaCrO3的带隙能,提高了其光电性能。在实验折射率的基础上,研究了样品的反射损耗(RL)、摩尔折射率(Rm)、摩尔电子极化率(αm)和非线性光学特性等理论光学特性。我们采用Jonscher引用的一个改变的传导关系来分析我们样品的σ(f, T)数据。发现我们的化合物具有显著的电阻率,这使得它们对需要最小涡流的微波应用非常有用。电子输运特性的研究表明,样品中存在半导体行为,符合相关势垒跳变机制(CBH)和非重叠小极化子隧道(NSPT)模型。
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
Applied Physics A
Applied Physics A 工程技术-材料科学:综合
CiteScore
4.80
自引率
7.40%
发文量
964
审稿时长
38 days
期刊介绍: Applied Physics A publishes experimental and theoretical investigations in applied physics as regular articles, rapid communications, and invited papers. The distinguished 30-member Board of Editors reflects the interdisciplinary approach of the journal and ensures the highest quality of peer review.
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