Synthesis and Comprehensive Characterization of Sr2TiZrO6 Double Perovskite: Insights into Dielectric and Electrical Properties for Advanced Applications

IF 4.9 3区化学 Q2 POLYMER SCIENCE

Journal of Inorganic and Organometallic Polymers and Materials Pub Date : 2025-03-07 DOI:10.1007/s10904-025-03696-6

M. Madani, Safa Mnefgui, K. Omri

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引用次数: 0

Abstract

This study comprehensively investigates the structural, morphological, and electrical properties of Sr₂TiZrO₆ (SrTZr) double perovskite synthesized via a solid-state reaction method. X-ray diffraction (XRD) analysis confirmed the formation of a single-phase tetragonal structure (space group P4mm) with high crystallinity. Scanning electron microscopy (SEM) revealed a dense microstructure with uniform grain distribution. Crystallite size, calculated using the Scherrer formula, ranges from 35 to 40 nm, influencing grain boundary area and charge transport. Dielectric measurements show significant interfacial polarization, indicating potential for high-frequency applications. Impedance spectroscopy and electrical modulus analysis revealed non-Debye behavior, thermally activated conductivity, and hopping conduction. The calculated activation energy suggests a thermally induced hopping process, with values E_a1=832 meV (high temperature) and E_a2=503 meV (low temperature). Dielectric loss increases with temperature, likely due to enhanced conductivity. These findings highlight the promising potential of SrTZr double perovskite for applications in advanced electronics, particularly where low dielectric loss and efficient energy storage are required.

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Sr2TiZrO6双钙钛矿的合成和综合表征：对介电性能和电学性能的深入研究

本研究全面考察了采用固相反应法制备的Sr2TiZrO6 （SrTZr）双钙钛矿的结构、形态和电学性能。x射线衍射（XRD）分析证实形成了高结晶度的单相四方结构（空间群P4mm）。扫描电镜（SEM）观察到晶粒分布均匀，组织致密。根据Scherrer公式计算，晶体尺寸在35 ~ 40 nm之间，影响晶界面积和电荷输运。介电测量显示显著的界面极化，表明高频应用的潜力。阻抗谱和电模量分析揭示了非德拜行为、热激活电导率和跳变导电。计算得到的活化能为热诱导跳变过程，Ea1=832 meV（高温），Ea2=503 meV（低温）。介电损耗随着温度的升高而增加，可能是由于电导率的增强。这些发现突出了SrTZr双钙钛矿在先进电子领域的应用前景，特别是在需要低介电损耗和高效储能的领域。

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

Journal of Inorganic and Organometallic Polymers and Materials 化学-高分子科学

CiteScore

8.30

自引率

7.50%

发文量

335

审稿时长

1.8 months

期刊介绍： Journal of Inorganic and Organometallic Polymers and Materials [JIOP or JIOPM] is a comprehensive resource for reports on the latest theoretical and experimental research. This bimonthly journal encompasses a broad range of synthetic and natural substances which contain main group, transition, and inner transition elements. The publication includes fully peer-reviewed original papers and shorter communications, as well as topical review papers that address the synthesis, characterization, evaluation, and phenomena of inorganic and organometallic polymers, materials, and supramolecular systems.