DOI: 10.1126/science.1220119. Electrical Wind Force–Driven and Dislocation-Templated Amorphization in Phase-Change Nanowires [Penn]

Electrical Wind Force–Driven and Dislocation-Templated Amorphization in Phase-Change Nanowires

10.1126/science.1220119

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Exploiting Defects in a Jam Phase-change materials that can readily switch between crystalline and amorphous states are increasingly finding use in nonvolatile memory devices (see the Perspective by Hewak and Gholipour ). Using high-resolution transmission electron microscopy, Nam et al. (p. 1561 ) show that for Ge 2 Sb 2 Te 5 , the application of an electric field drives crystal dislocations in one direction, leading to their accumulation and eventual jamming, which causes the phase transition. Loke et al. (p. 1566 ) found that by applying a constant low voltage to Ge 2 Sb 2 Te 5 , they could accelerate its phase-switching speeds, without harming the long-term stability of the switched state.

Bibliography

Nam, S.-W., Chung, H.-S., Lo, Y. C., Qi, L., Li, J., Lu, Y., Johnson, A. T. C., Jung, Y., Nukala, P., & Agarwal, R. (2012). Electrical Wind ForceâDriven and Dislocation-Templated Amorphization in Phase-Change Nanowires. Science, 336(6088), 1561â1566.

Authors 10

Sung-Wook Nam (first)
Hee-Suk Chung (additional)
Yu Chieh Lo (additional)
Liang Qi (additional)
Ju Li (additional)
Ye Lu (additional)
A.T. Charlie Johnson (additional)
Yeonwoong Jung (additional)
Pavan Nukala (additional)
Ritesh Agarwal (additional)

References 33 Referenced 172

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10.1021/nl104537c
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Fons P., et al.., Phys. Rev. B 82, 041203(R) (2010). (10.1103/PhysRevB.82.041203) / Phys. Rev. B by Fons P. (2010)
10.1038/nchem.1007
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10.1080/14786436008241199
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H. Zheng et al . Nat. Commun. 1 144 (2010).
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10.1038/nmat1215
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10.1103/PhysRevB.71.224102
10.1103/PhysRevLett.70.3752
D. Hull D. J. Bacon Introduction to Dislocations (Butterworth-Heinemann Oxford ed. 4 2001). (10.1016/B978-075064681-9/50002-X)
10.1103/PhysRevE.53.4655
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10.1126/science.1195628
10.1080/09500830310001657353
10.1016/j.actamat.2009.10.049
10.1103/PhysRevLett.97.035701

Dates

Type	When
Created	13 years, 1 month ago (June 21, 2012, 7:53 p.m.)
Deposited	1 year, 7 months ago (Jan. 10, 2024, 8:59 a.m.)
Indexed	1 day, 17 hours ago (Aug. 19, 2025, 6:13 a.m.)
Issued	13 years, 1 month ago (June 22, 2012)
Published	13 years, 1 month ago (June 22, 2012)
Published Print	13 years, 1 month ago (June 22, 2012)

Funders 0

None

BibTeX

@article{Nam_2012, title={Electrical Wind Force–Driven and Dislocation-Templated Amorphization in Phase-Change Nanowires}, volume={336}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1220119}, DOI={10.1126/science.1220119}, number={6088}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Nam, Sung-Wook and Chung, Hee-Suk and Lo, Yu Chieh and Qi, Liang and Li, Ju and Lu, Ye and Johnson, A.T. Charlie and Jung, Yeonwoong and Nukala, Pavan and Agarwal, Ritesh}, year={2012}, month=jun, pages={1561–1566} }

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