微波辅助固态下掺杂 Eu 对合成锌锡化合物 EuxYb1-xZn2Sb2 输运特性的影响

IF 1.6 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
Ibrahim Majeed Jasim, A. Hmood
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引用次数: 0

摘要

本研究采用微波辐照法合成并表征了 EuxYb1-xZn2Sb2 (0 ≤ × ≤ 1.0) 系统。在此,微波技术在热电材料合成中具有生态优势,如持续时间短(25 分钟)。合成样品通过 XRD、SEM、EDX、塞贝克系数、电导率和霍尔电压测量进行了分析。此外,还广泛讨论了在 YbZn2Sb2 中掺杂 Eu 的微波合成化合物及其特性。研究发现,微波辐照可加速主要成分受体周围快速受热引起的反应,并产生大型四元锭。XRD 数据显示,合成的化合物结晶呈六角形结构,几乎所有合成的化合物中 ZnSb 都以第二相的形式析出。此外,载流子浓度为 5.11 \(\times \) 1021 cm-3 的 Eu0.6Yb0.4Zn2Sb2 样品在 300 K 时的最大 PF 为 26.27 μW/cmK2。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Influence of Eu-doping on transport properties of synthesized zintl phase compounds EuxYb1−xZn2Sb2 under microwave-assisted solid-state

Influence of Eu-doping on transport properties of synthesized zintl phase compounds EuxYb1−xZn2Sb2 under microwave-assisted solid-state

In this work, synthesis and characterization of EuxYb1−xZn2Sb2 (0 ≤ × ≤ 1.0) systems under microwave irradiation method. Herein, microwave technique offers ecological merit in the synthesis of thermoelectric materials such as short duration (25 min). The synthesized samples were analyzed by their XRD, SEM, EDX, Seebeck coefficient, electrical conductivity, and Hall voltage measurements. The microwave synthesis of compounds by doping Eu into YbZn2Sb2 and their properties are extensively discussed. It was found that the microwave irradiation acts to accelerate the reactions induced by fast heat surrounding susceptor of primary components and give large quaternary ingots. The XRD data revealed that the synthesized compounds crystallized in a hexagonal structure where ZnSb precipitated as a secondary phase in almost all the synthesized adopted compounds. Furthermore, a maximum PF of 26.27 μW/cmK2 at 518 K was acquired for Eu0.6Yb0.4Zn2Sb2 sample with carrier concentration of 5.11 \(\times \) 1021 cm−3 at 300 K.

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来源期刊
Indian Journal of Physics
Indian Journal of Physics 物理-物理:综合
CiteScore
3.40
自引率
10.00%
发文量
275
审稿时长
3-8 weeks
期刊介绍: Indian Journal of Physics is a monthly research journal in English published by the Indian Association for the Cultivation of Sciences in collaboration with the Indian Physical Society. The journal publishes refereed papers covering current research in Physics in the following category: Astrophysics, Atmospheric and Space physics; Atomic & Molecular Physics; Biophysics; Condensed Matter & Materials Physics; General & Interdisciplinary Physics; Nonlinear dynamics & Complex Systems; Nuclear Physics; Optics and Spectroscopy; Particle Physics; Plasma Physics; Relativity & Cosmology; Statistical Physics.
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