Intensity-dependent SA-RSA switching in nickel-chromium transition metal oxide nanoparticles

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2024-10-18 DOI:10.1016/j.optmat.2024.116298

Sijo S. Thomas , I Hubert Joe

引用次数: 0

Abstract

Semiconductor systems are suitable materials for nonlinear-optical applications because of their large optical nonlinearities and rapid response. In this work, NiCr_xFe_2-xO₄ nanoparticles for x = 0.5, 1, 1.5, 2 are synthesized by the co-precipitation method, and its structural, vibrational, and nonlinear optical properties are characterized. All the prepared samples belong to a cubic spinel structure except the sample x = 2, with a rhombohedral structure, with crystallite sizes ranging from 30 to 40 nm and a bandgap ranging from 3.3 eV to 4eV. The aqueous samples show a saturable absorption on irradiating a 532 nm pulsed laser at low intensities and reverse saturable absorption with saturation effects at higher intensities.

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镍铬过渡金属氧化物纳米粒子中的强度依赖性 SA-RSA 开关

半导体系统因其较大的光学非线性和快速响应而成为非线性光学应用的合适材料。本研究采用共沉淀法合成了 x = 0.5、1、1.5、2 的 NiCrxFe2-xO4 纳米颗粒，并对其结构、振动和非线性光学性质进行了表征。所制备的样品除 x = 2 样品为斜方体结构外，其余均为立方尖晶石结构，晶粒大小在 30 至 40 nm 之间，带隙在 3.3 eV 至 4eV 之间。水溶液样品在低强度下照射 532 nm 脉冲激光时显示出饱和吸收，而在高强度下则显示出反向饱和吸收和饱和效应。

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

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.