超流体氦中生长的超细β-W 纳米线的研究

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2024-11-21 DOI:10.1016/j.matlet.2024.137746

R.E. Boltnev , A.V. Karabulin , I.N. Krushinskaya , V.I. Matyushenko , A.A. Pelmenev , I.I. Khodos

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引用次数: 0

摘要

通过激光烧蚀浸没在超流体氦中的钨靶，获得了直径为 2 ÷ 5 纳米的纳米线束。通过透射电子显微镜研究了纳米线的形态和结构。研究发现，钨纳米线是以β相形成的。研究了 β-W 纳米线的热稳定性。在氦气压力为 1 巴的条件下，纳米线束的电阻与温度的关系非常微弱，从 5 К 到 290 К 不等。

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Investigation of ultrathin β-W nanowires grown in superfluid helium

Bundles of nanowires with diameters 2 ÷ 5 nm were obtained by laser ablation of a tungsten target immersed in superfluid helium. The morphology and structure of the nanowires were studied by means of transmission electron microscopy. It was found that the tungsten nanowires were formed in the β-phase. The thermal stability of the β-W nanowires was studied. The electrical resistance of the bundles manifested a very weak dependence on temperature with the range from 5 up to 290 К at helium gas pressure 1 bar.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive