A Complicated Route from Disorder to Order in Antimony–Tellurium Binary Phase Change Materials
Abstract: The disorder‐to‐order (crystallization) process in phase‐change materials determines the speed and storage polymorphism of phase‐change memory devices. Only by clarifying the fine‐structure variation can the devices be insightfully designed, and encode and store information. As essential phase‐change parent materials, the crystallized Sb–Te binary system is generally considered to have the cationic/anionic site occupied by Sb/Te atoms. Here, direct atomic identification and simulation demonstrate that the ultrafast crystallization speed of Sb–Te materials is due to the random nature of lattice site occupation by different classes of atoms with the resulting octahedral motifs having high similarity to the amorphous state. It is further proved that after atomic ordering with disordered chemical occupation, chemical ordering takes place, which results in different storage states with different resistance values. These new insights into the complicated route from disorder to order will play an essential role in designing neuromorphic devices with varying polymorphisms.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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A Complicated Route from Disorder to Order in Antimony–Tellurium Binary Phase Change Materials ; day:22 ; month:12 ; year:2023 ; extent:9
Advanced science ; (22.12.2023) (gesamt 9)
- Urheber
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Zheng, Yonghui
Song, Wenxiong
Song, Zhitang
Zhang, Yuanyuan
Xin, Tianjiao
Liu, Cheng
Xue, Yuan
Song, Sannian
Liu, Bo
Lin, Xiaoling
Kuznetsov, Vladimir G.
Tupitsyn, Ilya I.
Kolobov, Alexander V.
Cheng, Yan
- DOI
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10.1002/advs.202301021
- URN
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urn:nbn:de:101:1-2023122314093477813323
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:25 MESZ
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Beteiligte
- Zheng, Yonghui
- Song, Wenxiong
- Song, Zhitang
- Zhang, Yuanyuan
- Xin, Tianjiao
- Liu, Cheng
- Xue, Yuan
- Song, Sannian
- Liu, Bo
- Lin, Xiaoling
- Kuznetsov, Vladimir G.
- Tupitsyn, Ilya I.
- Kolobov, Alexander V.
- Cheng, Yan
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