High-Entropy Thermistor Ceramics (La1/3Nd1/3M1/3)2(Zr1/2Sn1/2)2O7 (M = Sm, Eu, Gd, or Dy) with High Sensitivity for High-Temperature Measurements
A series of high-entropy pyrochlore ceramics, specifically (La<sub>1/3</sub>Nd<sub>1/3</sub><i>M</i><sub>1/3</sub>)<sub>2</sub>(Zn<sub>1/2</sub>Sn<sub>1/2</sub>)<sub>2</sub>O<sub>7</sub> (<i>M</i> = 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 (La<sub>1/3</sub>Nd<sub>1/3</sub><i>M</i><sub>1/3</sub>)<sub>2</sub>(Zn<sub>1/2</sub>Sn<sub>1/2</sub>)<sub>2</sub>O<sub>7</sub> promising candidates for the development of high-sensitivity, long-life high-temperature thermistors suitable for applications within the temperature range of 400-1200 °C.
Authors
- Tingting Xuan
- Xiaohui Li (ORCID: https://orcid.org/0000-0002-5828-7791)
- Yi‐An Chen (ORCID: https://orcid.org/0000-0002-5892-1801)
- Xiaoyi Chen (ORCID: https://orcid.org/0000-0001-7859-0299)
- Bo Gao (ORCID: https://orcid.org/0000-0002-3472-9508)
- Yuling Tuo
Institutions
- Xinjiang Technical Institute of Physics & Chemistry (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Sensors
- Published
- 2024-11-25
- DOI
- https://doi.org/10.3390/s24237523
- Citations
- 4
- Primary Topic
- Electrical and Thermal Properties of Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.83
Funders
- Natural Science Foundation of Xinjiang Province