Transmission electron microscopy study of Pb-depleted disks in PbTe-based alloys
Even though the crystal structure of lead telluride (PbTe) has been extensively studied for many years, we discovered that the structure has a strong tendency to form Pb-depleted disks on {001} planes. These disks are around 2–5 nm in diameter and less than 0.5 nm in thickness, with a volume density...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Cambridge University Press (Materials Research Society)
2013
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| Online Access: | http://hdl.handle.net/1721.1/78254 https://orcid.org/0000-0002-3968-8530 |
| _version_ | 1811086011669676032 |
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| author | Wang, Hengzhi Zhang, Qinyong Yu, Bo Wang, Hui Liu, Weishu Chen, Gang Ren, Zhifeng |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Wang, Hengzhi Zhang, Qinyong Yu, Bo Wang, Hui Liu, Weishu Chen, Gang Ren, Zhifeng |
| author_sort | Wang, Hengzhi |
| collection | MIT |
| description | Even though the crystal structure of lead telluride (PbTe) has been extensively studied for many years, we discovered that the structure has a strong tendency to form Pb-depleted disks on {001} planes. These disks are around 2–5 nm in diameter and less than 0.5 nm in thickness, with a volume density of around 9 × 10[superscript 17] cm[superscript −3], resulting in lattice strain fields (3–20 nm) on both sides of the disks along their normal directions. Moreover, such disks were also observed in Pb-rich Pb[subscript 1.3]Te, Pb-deficient PbTe[subscript 1.3], and thallium (Tl)-doped Tl[subscript 0.01]Pb[subscript 0.99]Te and Tl[subscript 0.02]Pb[subscript 0.98]Te crystals. Because of the effects of diffraction contrast imaging by transmission electron microscopy and orientations of the crystals, these native lattice strain fields were incorrectly recognized as precipitates or nanoinclusions in PbTe-based materials. This discovery provides new insight into the formation mechanism of the precipitates or nanoinclusions in PbTe-based materials. |
| first_indexed | 2024-09-23T13:19:29Z |
| format | Article |
| id | mit-1721.1/78254 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:19:29Z |
| publishDate | 2013 |
| publisher | Cambridge University Press (Materials Research Society) |
| record_format | dspace |
| spelling | mit-1721.1/782542022-09-28T13:23:01Z Transmission electron microscopy study of Pb-depleted disks in PbTe-based alloys Wang, Hengzhi Zhang, Qinyong Yu, Bo Wang, Hui Liu, Weishu Chen, Gang Ren, Zhifeng Massachusetts Institute of Technology. Department of Mechanical Engineering Chen, Gang Even though the crystal structure of lead telluride (PbTe) has been extensively studied for many years, we discovered that the structure has a strong tendency to form Pb-depleted disks on {001} planes. These disks are around 2–5 nm in diameter and less than 0.5 nm in thickness, with a volume density of around 9 × 10[superscript 17] cm[superscript −3], resulting in lattice strain fields (3–20 nm) on both sides of the disks along their normal directions. Moreover, such disks were also observed in Pb-rich Pb[subscript 1.3]Te, Pb-deficient PbTe[subscript 1.3], and thallium (Tl)-doped Tl[subscript 0.01]Pb[subscript 0.99]Te and Tl[subscript 0.02]Pb[subscript 0.98]Te crystals. Because of the effects of diffraction contrast imaging by transmission electron microscopy and orientations of the crystals, these native lattice strain fields were incorrectly recognized as precipitates or nanoinclusions in PbTe-based materials. This discovery provides new insight into the formation mechanism of the precipitates or nanoinclusions in PbTe-based materials. United States. Dept. of Energy. Office of Basic Energy Sciences (Award DE-FG02-08ER46516) 2013-04-02T17:44:30Z 2013-04-02T17:44:30Z 2011-02 2010-09 Article http://purl.org/eprint/type/JournalArticle 0884-2914 2044-5326 http://hdl.handle.net/1721.1/78254 Wang, Hengzhi et al. “Transmission Electron Microscopy Study of Pb-depleted Disks in PbTe-based Alloys.” Journal of Materials Research 26.07 (2011): 912–916. © 2011 Cambridge University Press https://orcid.org/0000-0002-3968-8530 en_US http://dx.doi.org/10.1557/jmr.2010.96 Journal of Materials Research Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Cambridge University Press (Materials Research Society) MIT web domain |
| spellingShingle | Wang, Hengzhi Zhang, Qinyong Yu, Bo Wang, Hui Liu, Weishu Chen, Gang Ren, Zhifeng Transmission electron microscopy study of Pb-depleted disks in PbTe-based alloys |
| title | Transmission electron microscopy study of Pb-depleted disks in PbTe-based alloys |
| title_full | Transmission electron microscopy study of Pb-depleted disks in PbTe-based alloys |
| title_fullStr | Transmission electron microscopy study of Pb-depleted disks in PbTe-based alloys |
| title_full_unstemmed | Transmission electron microscopy study of Pb-depleted disks in PbTe-based alloys |
| title_short | Transmission electron microscopy study of Pb-depleted disks in PbTe-based alloys |
| title_sort | transmission electron microscopy study of pb depleted disks in pbte based alloys |
| url | http://hdl.handle.net/1721.1/78254 https://orcid.org/0000-0002-3968-8530 |
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