探索三重钙钛矿Sr3Fe2TeO9的线性和非线性光学性质

IF 3.1 3区物理与天体物理 Q2 Engineering

Optik Pub Date : 2025-09-22 DOI:10.1016/j.ijleo.2025.172543

Khan Haris, Mohd Ikram

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引用次数: 0

摘要

采用固相反应法制备了三钙钛矿Sr₃Fe₂TeO₉。结构分析证实，材料结晶为具有（I4/m）空间基团的四方体系。利用UV-DRS光谱研究样品的光学性质，通过Tauc的分析确定了直接跃迁的直接光学带隙为1.87 eV。基于吸光度和反射率数据，计算了关键的光学参数，包括厄巴赫能量（0.675 eV）、光学消光系数和折射率，为材料的光学行为提供了重要的见解。此外，研究通过确定三阶非线性磁化率（χ(3) = 9.28 × 10⁻¹ ²esu）来探索非线性光学响应，这表明了异常的非线性响应。这种高值的χ(3)使Sr₃Fe₂TeO₉成为一种有前途的先进非线性光电子器件材料，包括光开关和信号处理应用。

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Exploring the linear and nonlinear optical properties of triple perovskite Sr3Fe2TeO9

The solid-state reaction method, a reliable and scalable synthesis route, was employed to prepare the triple perovskite Sr₃Fe₂TeO₉. Structural analysis confirmed that the material crystallizes in a tetragonal system with the (I4/m) space group. UV-DRS spectroscopy was utilized to investigate the optical properties of the sample, revealing a direct optical bandgap of 1.87 eV for direct transitions, determined through Tauc’s analysis. Based on the absorbance and reflectance data, key optical parameters, including the Urbach energy (0.675 eV), optical extinction coefficient, and refractive index, were computed, providing critical insights into the optical behavior of the material. Furthermore, the study explored the nonlinear optical response by determining the third-order nonlinear susceptibility (χ⁽³⁾ = 9.28 × 10⁻¹ ² esu), which indicates exceptional nonlinear response. This high value of χ⁽³⁾ positions Sr₃Fe₂TeO₉ as a promising material for advanced nonlinear optoelectronic devices, including optical switching and signal processing applications.

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来源期刊

Optik 物理-光学

CiteScore

6.90

自引率

12.90%

发文量

1471

审稿时长

46 days

期刊介绍： Optik publishes articles on all subjects related to light and electron optics and offers a survey on the state of research and technical development within the following fields: Optics: -Optics design, geometrical and beam optics, wave optics- Optical and micro-optical components, diffractive optics, devices and systems- Photoelectric and optoelectronic devices- Optical properties of materials, nonlinear optics, wave propagation and transmission in homogeneous and inhomogeneous materials- Information optics, image formation and processing, holographic techniques, microscopes and spectrometer techniques, and image analysis- Optical testing and measuring techniques- Optical communication and computing- Physiological optics- As well as other related topics.