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Boron-Rich Molybden...
Boron-Rich Molybdenum Boride with Unusual Short-Range Vacancy Ordering, Anisotropic Hardness, and Superconductivity
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- Tang, Hu (författare)
- Ctr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
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- Gao, Xiang (författare)
- Ctr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
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- Zhang, Jian (författare)
- Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
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- Gao, Bo (författare)
- Ctr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
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- Zhou, Wenju (författare)
- Ctr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China;Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
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- Yan, Bingmin (författare)
- Ctr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
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- Li, Xue (författare)
- Jilin Univ, State Key Lab Superhard Mat, Coll Phys, Changchun 130012, Peoples R China;Jilin Univ, Innovat Ctr Computat Phys Methods & Software, Coll Phys, Changchun 130012, Peoples R China
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- Zhang, Qinghua (författare)
- Chinese Acad Sci, Beijing Natl Lab Condensed Matter, Beijing 100190, Peoples R China;Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
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- Peng, Shang (författare)
- Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Peoples R China
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- Huang, Dajian (författare)
- Ctr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
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- Zhang, Lijun (författare)
- Yanshan Univ, Coll Mat Sci & Engn, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
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- Yuan, Xiaohong (författare)
- Ctr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
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- Wan, Biao (författare)
- Yanshan Univ, Coll Mat Sci & Engn, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
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- Peng, Chong (författare)
- Yanshan Univ, Coll Mat Sci & Engn, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
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- Wu, Lailei (författare)
- Yanshan Univ, Coll Mat Sci & Engn, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
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- Zhang, Dongzhou (författare)
- Univ Hawaii Manoa, Hawaii Inst Geophys & Planetol, Sch Ocean & Earth Sci & Technol, Honolulu, HI 96822 USA
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- Liu, Hanyu (författare)
- Jilin Univ, State Key Lab Superhard Mat, Coll Phys, Changchun 130012, Peoples R China;Jilin Univ, Innovat Ctr Computat Phys Methods & Software, Coll Phys, Changchun 130012, Peoples R China
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- Gu, Lin (författare)
- Chinese Acad Sci, Beijing Natl Lab Condensed Matter, Beijing 100190, Peoples R China;Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
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- Gao, Faming (författare)
- Yanshan Univ, Coll Environm & Chem Engn, Key Lab Appl Chem, Qinhuangdao 066004, Hebei, Peoples R China
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- Irifune, Tetsuo (författare)
- Ehime Univ, Geodynam Res Ctr, Matsuyama, Ehime 7908577, Japan
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- Ahuja, Rajeev, 1965- (författare)
- Uppsala universitet,Materialteori,Condensed Matter Theory Group
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- Mao, Ho-Kwang (författare)
- Ctr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
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- Gou, Huiyang (författare)
- Ctr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
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(creator_code:org_t)
- 2019-12-10
- 2020
- Engelska.
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Ingår i: Chemistry of Materials. - : AMER CHEMICAL SOC. - 0897-4756 .- 1520-5002. ; 32:1, s. 459-467
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Determination of the structures of materials involving more light elements such as boron-rich compounds is challenging and technically important in understanding their varied compositions and superior functionalities. Here we resolve the long-standing uncertainties in structure and composition about the highest boride (termed MoB4, Mo1-xB3, or MoB3) through the rapid formation of large sized boron-rich molybdenum boride under pressure. Using high-quality single-crystal X-ray diffraction analysis and aberration-corrected scanning transmission electron microscopy, we reveal that boron-rich molybdenum boride with a composition of Mo0.757B3 exhibits P6(3)/mmc symmetry with a partial occupancy of 0.514 in 211 Mo sites (Mol), and direct observations reveal the short-range ordering of cation vacancies in (010) crystal planes. Large anisotropic Young's moduli and Vickers hardness are seen for Mo0.757B3, which may be attributed by its two-dimensional boron distributions. Mo0.757B3 is also found to be superconducting with a transition temperature (T-c) of 2.4 K, which was confirmed by measurements of resistivity and magnetic susceptibility. Theoretical calculations suggest that the partial occupancy of Mo atoms plays a crucial role in the emergence of superconductivity.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
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Tang, Hu
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Gao, Xiang
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Zhang, Jian
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Gao, Bo
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Zhou, Wenju
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Yan, Bingmin
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Li, Xue
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Zhang, Qinghua
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Peng, Shang
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Huang, Dajian
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Zhang, Lijun
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Yuan, Xiaohong
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Wan, Biao
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Peng, Chong
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Wu, Lailei
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Zhang, Dongzhou
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Liu, Hanyu
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Gu, Lin
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Gao, Faming
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Irifune, Tetsuo
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Ahuja, Rajeev, 1 ...
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Mao, Ho-Kwang
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Gou, Huiyang
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- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Materialkemi
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Chemistry of Mat ...
- Av lärosätet
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Uppsala universitet