Influence of SrBi2Nb2O9 (SBN) incorporation in K0.5Na0.5NbO3 (KNN) ceramics on its structural and electrical properties

IF 2.8 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Physica B-condensed Matter Pub Date : 2025-03-12 DOI:10.1016/j.physb.2025.417144

Archana Indurkar , Sumit Kumar Mev , Saket Asthana , Oroosa Subohi

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引用次数: 0

Abstract

This paper presents the study of electrical and ferroelectric behaviour of lead-free solid-solution with the end members belonging to two distinct families: perovskite and bismuth layer-structured ferroelectrics (BLSF). (1-x) (K_0.5Na_0.5NbO₃) - x (SrBi₂Nb₂O₉) (x = 0.10, 0.20, 0.30, 0.40, and 0.50 mol %) ceramics were prepared using solid-state reaction. XRD and Raman spectroscopy were used to study the phase formation. A dense and irregular grain distribution was observed from SEM images. Addition of SBN in KNN tends to lower the transition temperature (from 379 °C to 372 °C), ε_r (from 435 to 375) and P_r (from 9.49 μC/cm² to 2.85 μC/cm²) initially up to x = 0.30, however T_c and P_r increase with further increase in SBN composition. The composition with x = 0.5 shows enhanced ferroelectric properties with ε_r = 473, T_c = 417 °C, P_r = 13.81 μC/cm² and E_c = 31.96 kV/cm which makes this ceramic composition a potential candidate for ferroelectric capacitor and memory devices.

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来源期刊

Physica B-condensed Matter 物理-物理：凝聚态物理

CiteScore

4.90

自引率

7.10%

发文量

703

审稿时长

44 days

期刊介绍： Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work. Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas: -Magnetism -Materials physics -Nanostructures and nanomaterials -Optics and optical materials -Quantum materials -Semiconductors -Strongly correlated systems -Superconductivity -Surfaces and interfaces