用于高温测量的具有高灵敏度的高熵热敏电阻陶瓷（LaNd）（ZrSn）O（= Sm、Eu、Gd或Dy）

High-Entropy Thermistor Ceramics (LaNd)(ZrSn)O ( = Sm, Eu, Gd, or Dy) with High Sensitivity for High-Temperature Measurements.

作者信息

Chen Yian, Xuan Tingting, Li Xiaohui, Tuo Yuling, Chen Xiaoyi, Gao Bo

机构信息

Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry of CAS, Urumqi 830011, China.

Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.

出版信息

Sensors (Basel). 2024 Nov 25;24(23):7523. doi: 10.3390/s24237523.

DOI:10.3390/s24237523

PMID:39686060

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11644228/

Abstract

A series of high-entropy pyrochlore ceramics, specifically (LaNd)(ZnSn)O ( = Sm, Eu, Gd, or Dy), have been synthesized using the solid-state reaction method. Their potential as high-temperature thermistors was investigated by analyzing electrical and aging properties at elevated temperatures. Characterization using X-ray diffraction, scanning electron microscopy, and Raman spectroscopy confirms that these ceramics are dense, single-phase solid solutions with a pyrochlore structure. Electrical analysis demonstrate that these ceramics maintain high resistivity and resistance stability, exhibiting typical negative temperature coefficient features and high B values across a wide temperature range. These characteristics make (LaNd)(ZnSn)O promising candidates for the development of high-sensitivity, long-life high-temperature thermistors suitable for applications within the temperature range of 400-1200 °C.

摘要

一系列高熵烧绿石陶瓷，具体为(LaNd)(ZnSn)O（其中 = Sm、Eu、Gd或Dy），已采用固态反应法合成。通过分析高温下的电学和老化性能，研究了它们作为高温热敏电阻的潜力。使用X射线衍射、扫描电子显微镜和拉曼光谱进行的表征证实，这些陶瓷是具有烧绿石结构的致密单相固溶体。电学分析表明，这些陶瓷保持高电阻率和电阻稳定性，在很宽的温度范围内表现出典型的负温度系数特性和高B值。这些特性使(LaNd)(ZnSn)O成为开发适用于400 - 1200°C温度范围内应用的高灵敏度、长寿命高温热敏电阻的有前途的候选材料。