Rietveld analysis and negative dielectric behavior of perovskite-like La1–xEuxMnO3 system

IF 1.3 4区物理与天体物理 Q4 PHYSICS, CONDENSED MATTER

Ferroelectrics Letters Section Pub Date : 2020-03-26 DOI:10.1080/07315171.2020.1810983

Shilpa Kumari, R. Rai, Pawan Kumar, P. Kumari, A. Dronov

引用次数: 1

Abstract

Abstract In this article, we report the results of the Rietveld and impedance analysis of Eu doped La1–xEuxMnO3 (LEMO; x = 0.10, 0.30, and 0.50) perovskite manganites synthesized by solid-state reaction method. Structural studies through Rietveld analysis confirm that a mixed-phase nature of all LEM samples having a hexagonal unit cell structure with a less detectable impurity (Eu2O3) ceramics. The patterns are zanalyzed in detail with structural distortion and strain in LEM manganites ceramics. Dielectric constant and modulus are found to increase with increasing Eu concentration. The samples LEM-0.10 shows the negative capacitance at low frequency and temperature, respectively.

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类钙钛矿La1-xEuxMnO3体系的Rietveld分析及负介电行为

摘要本文报道了Eu掺杂La1-xEuxMnO3 (LEMO;X = 0.10, 0.30, 0.50)固相反应法制备钙钛矿锰矿。通过Rietveld分析的结构研究证实，所有LEM样品的混合相性质具有六方单元结构，具有较少可检测到的杂质(Eu2O3)陶瓷。详细分析了LEM锰酸盐陶瓷的结构变形和应变。介电常数和模量随铕浓度的增加而增加。样品LEM-0.10分别为低频和温度下的负电容。

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

Ferroelectrics Letters Section 物理-物理：凝聚态物理

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

4.8 months

期刊介绍： Ferroelectrics Letters is a separately published section of the international journal Ferroelectrics. Both sections publish theoretical, experimental and applied papers on ferroelectrics and related materials, including ferroelastics, ferroelectric ferromagnetics, electrooptics, piezoelectrics, pyroelectrics, nonlinear dielectrics, polymers and liquid crystals. Ferroelectrics Letters permits the rapid publication of important, quality, short original papers on the theory, synthesis, properties and applications of ferroelectrics and related materials.