Unconventional Defects in a Quasi-One-Dimensional KMn6Bi5

Jung, Hee Joon; Bao, Jin-Ke; Chung, Duck Young; Kanatzidis, Mercouri G.; Dravid, Vinayak P.

doi:10.1021/acs.nanolett.9b03237

Title: Unconventional Defects in a Quasi-One-Dimensional KMn₆Bi₅

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Abstract

Quasi-one-dimensional (Q1D) structures comprising a compact array of indefinitely long 1D nanowires (NWs) are scarce, especially in a bulk device-scale showing metallic and semiconducting behaviors along different axes. Unlike plentiful observations of nature of defects in three-/two -dimensional materials, there is a notable paucity of such reports in Q1D. Herein we present unconventional motific defects and their properties in a bulk Q1D KMn₆Bi₅ crystal, in which an individual NW motif acts as one body. We discovered motific inter- and intra-NW defects, such that a linear set of 1D motifs are displaced. Stress generates two domains with altered inter-NW spacings and a Bi–Mn solid solution grain, leading to a local bulk plasmon shift due to NW array reconfiguration as well as atomic rearrangement. The observation of such exotic defects and associated phenomena in this Q1D may provide guidance on overall defect mechanism in other Q1D systems and their collective anisotropic properties.

Authors:

^[1];

^[2]; Chung, Duck Young ^[2];

^[3];

^[1]

Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering
Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering

Publication Date:: Thu Sep 12 00:00:00 EDT 2019

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division

OSTI Identifier:: 1570004

Grant/Contract Number:: AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Nano Letters

Additional Journal Information:: Journal Volume: 19; Journal Issue: 10; Journal ID: ISSN 1530-6984

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

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                    Jung, Hee Joon, Bao, Jin-Ke, Chung, Duck Young, Kanatzidis, Mercouri G., and Dravid, Vinayak P. Unconventional Defects in a Quasi-One-Dimensional KMn6Bi5.  United States: N. p., 2019. 
Web.  doi:10.1021/acs.nanolett.9b03237.

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                    Jung, Hee Joon, Bao, Jin-Ke, Chung, Duck Young, Kanatzidis, Mercouri G., & Dravid, Vinayak P. Unconventional Defects in a Quasi-One-Dimensional KMn6Bi5.  United States.  https://doi.org/10.1021/acs.nanolett.9b03237

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                    Jung, Hee Joon, Bao, Jin-Ke, Chung, Duck Young, Kanatzidis, Mercouri G., and Dravid, Vinayak P. Thu .  
"Unconventional Defects in a Quasi-One-Dimensional KMn6Bi5".  United States.  https://doi.org/10.1021/acs.nanolett.9b03237.  https://www.osti.gov/servlets/purl/1570004.

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@article{osti_1570004,

  title        = {Unconventional Defects in a Quasi-One-Dimensional KMn6Bi5},

  author       = {Jung, Hee Joon and Bao, Jin-Ke and Chung, Duck Young and Kanatzidis, Mercouri G. and Dravid, Vinayak P.},

  abstractNote = {Quasi-one-dimensional (Q1D) structures comprising a compact array of indefinitely long 1D nanowires (NWs) are scarce, especially in a bulk device-scale showing metallic and semiconducting behaviors along different axes. Unlike plentiful observations of nature of defects in three-/two -dimensional materials, there is a notable paucity of such reports in Q1D. Herein we present unconventional motific defects and their properties in a bulk Q1D KMn6Bi5 crystal, in which an individual NW motif acts as one body. We discovered motific inter- and intra-NW defects, such that a linear set of 1D motifs are displaced. Stress generates two domains with altered inter-NW spacings and a Bi–Mn solid solution grain, leading to a local bulk plasmon shift due to NW array reconfiguration as well as atomic rearrangement. The observation of such exotic defects and associated phenomena in this Q1D may provide guidance on overall defect mechanism in other Q1D systems and their collective anisotropic properties.},

  doi          = {10.1021/acs.nanolett.9b03237},

  journal      = {Nano Letters},

  number       = 10,

  volume       = 19,

  place        = {United States},

  year         = {Thu Sep 12 00:00:00 EDT 2019},

  month        = {Thu Sep 12 00:00:00 EDT 2019}

}

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Title: Unconventional Defects in a Quasi-One-Dimensional KMn6Bi5

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Title: Unconventional Defects in a Quasi-One-Dimensional KMn₆Bi₅