Amorphous phase-change memory alloy with no resistance drift.

IF 38.5 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nature Materials Pub Date : 2025-10-01 DOI:10.1038/s41563-025-02361-0

Xiaozhe Wang,Ruobing Wang,Suyang Sun,Ding Xu,Chao Nie,Zhou Zhou,Chenyu Wen,Junying Zhang,Ruixuan Chu,Xueyang Shen,Wen Zhou,Zhitang Song,Jiang-Jing Wang,En Ma,Wei Zhang

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引用次数: 0

Abstract

Spontaneous structural relaxation is intrinsic to glassy materials due to their metastable nature. For phase-change materials, the resultant temporal change in electrical resistance seriously hampers neuromorphic computing applications. Here we report an ab-initio-calculation-informed design of amorphous phase-change materials composed of robust 'molecule-like' motifs, depriving the amorphous alloy of critical structural ingredients responsible for relaxation and, hence, resistance drift. We demonstrate amorphous CrTe3 thin films that display practically no resistance drift at any working temperature from -200 °C to 165 °C, and highlight the multilevel encoding ability via a hybrid opto-electronic approach. We further reveal that the same no-drift behaviour holds for melt-quenched amorphous CrTe3 in electronic devices. Moreover, the application potential of CrTe3 is testified by its incorporation in a vehicle with an automatic path-tracking function. Our work provides an alternative route to achieve requisite properties for potential phase-change neuromorphic computing via the judicious design of disordered phase-change materials.

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无电阻漂移的非晶相变记忆合金。

由于玻璃材料的亚稳性质，自发结构弛豫是其固有的。对于相变材料，由此产生的电阻时间变化严重阻碍了神经形态计算的应用。在这里，我们报告了一种由坚固的“类分子”基序组成的非晶态相变材料的初始计算设计，剥夺了非晶态合金中导致弛豫和电阻漂移的关键结构成分。我们展示了在-200°C至165°C的任何工作温度下几乎没有电阻漂移的非晶CrTe3薄膜，并通过混合光电方法突出了多层编码能力。我们进一步揭示了在电子器件中熔融淬火的非晶CrTe3具有相同的无漂移行为。此外，将CrTe3应用于具有自动路径跟踪功能的车辆中，证明了其应用潜力。我们的工作提供了另一种途径，通过合理设计无序相变材料来实现潜在相变神经形态计算所需的特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Materials 工程技术-材料科学：综合

CiteScore

62.20

自引率

0.70%

发文量

221

审稿时长

3.2 months

期刊介绍： Nature Materials is a monthly multi-disciplinary journal aimed at bringing together cutting-edge research across the entire spectrum of materials science and engineering. It covers all applied and fundamental aspects of the synthesis/processing, structure/composition, properties, and performance of materials. The journal recognizes that materials research has an increasing impact on classical disciplines such as physics, chemistry, and biology. Additionally, Nature Materials provides a forum for the development of a common identity among materials scientists and encourages interdisciplinary collaboration. It takes an integrated and balanced approach to all areas of materials research, fostering the exchange of ideas between scientists involved in different disciplines. Nature Materials is an invaluable resource for scientists in academia and industry who are active in discovering and developing materials and materials-related concepts. It offers engaging and informative papers of exceptional significance and quality, with the aim of influencing the development of society in the future.