Physical and Electrical Properties of Yttria-Stabilized Zirconia Thin Films Prepared by Radio Frequency Magnetron Sputtering

Acta Polytechnica

Sergey N. Melnikov¹  Dmitriy A. Golosov¹  Sergey M. Zavatskiy¹ 

关键词: yttria-stabilized zirconia;    RF sputtering;    X-ray diffraction;    dielectric constant;    loss tangent;    capacity-voltage characteristic;    ionic conductivity.;   

DOI  :  

来源: Czech Technical University in Prague, Faculty of M

【 摘 要 】

This paper presents the electrophysical characteristics of a 7 mol.% yttria-stabilized zirconia (YSZ) thin film deposited by radio-frequency magnetron sputtering. In order to form the crystallinestructure, the deposited films were annealed in air over a temperature range of 700 ÷ 900 °C. By XRD analysis it was established that as the deposited films were amorphous, they crystallized into a pure cubic structure as a result of annealing in air at a temperature above 820 °C.The electrophysical properties of YSZ films were investigated on structures such¨as Ni/YSZ/Pt/Ti/Si and Ni/YSZ/Si. Film features ? > 20 and tg ?< 0.05 were obtained. An estimate of the capacity-voltage characteristic proved that the Ni/YSZ/Si structures possessed a hysteresis. This hysteresis resulted from the drift of the mobile ions in the YSZ film. High-temperature ionic conductivity of the stabilized zirconia was determined by the measurements of the electric resistivity of the YSZ films at 1 kHz over the temperature range from ambient to 800 °C. The YSZ film conductivity obtained was 1.96 × 10 -2S/cm under 800 °C.

【 授权许可】

Unknown