Abstract
A series of high-entropy pyrochlore ceramics, specifically (La(1/3)Nd(1/3)M(1/3))(2)(Zn(1/2)Sn(1/2))(2)O(7) (M = 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(1/3)Nd(1/3)M(1/3))(2)(Zn(1/2)Sn(1/2))(2)O(7) promising candidates for the development of high-sensitivity, long-life high-temperature thermistors suitable for applications within the temperature range of 400-1200 °C.