Investigation of the temperature-dependent functioning of BiFeO3 as a ferroelectric material through X-ray diffraction analysis

IF 2.5 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Applied Physics A Pub Date : 2024-12-16 DOI:10.1007/s00339-024-08101-6

Rana Sayed, Ayat Hassanien, Hany Hashim, Ahmed Mabied, Ahmed Ramadan, Soltan Soltan

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Abstract

In recent years, Bismuth Ferrite (BiFeO₃, BFO) has emerged as a promising multiferroic material due to its high antiferromagnetic Néel temperature (T_N ~ 623–643 K) and ferroelectric Curie temperature (T_C ~ 1083–1103 K). These properties make BFO a strong candidate for exhibiting a magnetoelectric effect even at room temperature. Understanding the temperature-dependent ferroelectric behavior of BFO is crucial for optimizing its performance in applications where stable ferroelectric behavior at operational temperatures is essential for enhancing device efficiency, stability, and functionality. This study investigates the impact of temperature on the crystallographic characteristics (unit cell type, bond lengths, and dimensions) and ferroelectric performance of BFO. X-ray diffraction and electrical hysteresis measurements confirm the presence of a ferroelectric phase with a rhombohedral R3c structure, along with two phase transitions: the first around 600 K from ferroelectric to paraelectric, and the second near 1050 K from paraelectric back to ferroelectric.

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近年来，铁氧体铋（BiFeO3，BFO）因其较高的反铁磁奈尔温度（TN ~ 623-643 K）和铁电居里温度（TC ~ 1083-1103 K）而成为一种前景广阔的多铁性材料。这些特性使 BFO 即使在室温下也能表现出磁电效应。在一些应用中，工作温度下稳定的铁电行为对提高器件效率、稳定性和功能性至关重要，了解 BFO 随温度变化的铁电行为对优化其性能至关重要。本研究探讨了温度对 BFO 晶体学特性（单胞类型、键长和尺寸）和铁电性能的影响。X 射线衍射和电滞后测量证实了具有斜方 R3c 结构的铁电相的存在，以及两个相变：第一个相变发生在 600 K 左右，从铁电相转变为准电相；第二个相变发生在 1050 K 附近，从准电相转变回铁电相。

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来源期刊

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.