Structure and electrical conductivity of Ti-Zr-Ni films of quasicrystalline and related crystalline phases

材料科学 电阻率和电导率 准晶 退火(玻璃) 无定形固体 溅射沉积 电阻和电导 晶体结构 温度系数 大气温度范围 合金 相(物质) 分析化学(期刊) 溅射 薄膜 结晶学 冶金 复合材料 热力学 化学 纳米技术 有机化学 工程类 物理 电气工程 色谱法
作者
S.V. Malykhin,Alexey Minenkov,I. А. Kopylets,В. В. Кондратенко,G. Ya. Khadzhay,Р. В. Вовк,M. V. Kislitsa,S.V. Surovitskiy,S. S. Borisova
出处
期刊:Journal of Alloys and Compounds [Elsevier BV]
卷期号:965: 171386-171386 被引量:4
标识
DOI:10.1016/j.jallcom.2023.171386
摘要

The temperature dependence of electrical resistivity in the temperature range from 4.4 to 300 K for Ti41Zr41Ni18 (at.%) thin coatings of various crystal perfection and phase compositions has been investigated. The films were deposited by the magnetron sputtering method. The following vacuum annealing in various modes provided several combinations of the film phases such as 1/1 and 2/1 crystal-approximant phases, the quasicrystalline icosahedral phase, Laves (Ti,Zr)2Ni phase and α-Ti(Zr) solid solution phase. The structure and composition of the films before and after annealing were studied in detail by X-ray diffractometry and cross-sectional high-resolution transmission electron microscopy. Samples with predominant amorphous, quasi-crystalline, and approximant 2/1 phases have a temperature coefficient of resistance less than zero, while samples dominated by crystalline phases exhibit the characteristic metallic conductivity. For the quasicrystalline Ti41Zr41Ni18 film, the temperature dependence of the electrical resistance turned out to be similar to that of bulk samples with the composition Ti40Zr40Ni20. A significant effect of the presence of phases with metallic conduction on the overall conductivity of the coating is described. The electrical resistance of the 2/1 approximant phase with a low content of the additional Laves phase in the film has an almost constant value over the entire temperature range under study.

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