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Boron-Rich Molybden...
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Tang, HuCtr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
(author)
Boron-Rich Molybdenum Boride with Unusual Short-Range Vacancy Ordering, Anisotropic Hardness, and Superconductivity
- Article/chapterEnglish2020
Publisher, publication year, extent ...
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2019-12-10
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AMER CHEMICAL SOC,2020
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Numbers
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LIBRIS-ID:oai:DiVA.org:uu-406060
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-406060URI
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https://doi.org/10.1021/acs.chemmater.9b04052DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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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.
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Gao, XiangCtr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
(author)
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Zhang, JianShandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
(author)
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Gao, BoCtr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
(author)
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Zhou, WenjuCtr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China;Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
(author)
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Yan, BingminCtr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
(author)
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Li, XueJilin 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
(author)
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Zhang, QinghuaChinese Acad Sci, Beijing Natl Lab Condensed Matter, Beijing 100190, Peoples R China;Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
(author)
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Peng, ShangWuhan Univ, Sch Phys & Technol, Wuhan 430072, Peoples R China
(author)
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Huang, DajianCtr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
(author)
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Zhang, LijunYanshan Univ, Coll Mat Sci & Engn, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
(author)
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Yuan, XiaohongCtr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
(author)
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Wan, BiaoYanshan Univ, Coll Mat Sci & Engn, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
(author)
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Peng, ChongYanshan Univ, Coll Mat Sci & Engn, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
(author)
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Wu, LaileiYanshan Univ, Coll Mat Sci & Engn, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
(author)
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Zhang, DongzhouUniv Hawaii Manoa, Hawaii Inst Geophys & Planetol, Sch Ocean & Earth Sci & Technol, Honolulu, HI 96822 USA
(author)
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Liu, HanyuJilin 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
(author)
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Gu, LinChinese Acad Sci, Beijing Natl Lab Condensed Matter, Beijing 100190, Peoples R China;Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
(author)
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Gao, FamingYanshan Univ, Coll Environm & Chem Engn, Key Lab Appl Chem, Qinhuangdao 066004, Hebei, Peoples R China
(author)
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Irifune, TetsuoEhime Univ, Geodynam Res Ctr, Matsuyama, Ehime 7908577, Japan
(author)
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Ahuja, Rajeev,1965-Uppsala universitet,Materialteori,Condensed Matter Theory Group(Swepub:uu)rajeeva
(author)
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Mao, Ho-KwangCtr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
(author)
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Gou, HuiyangCtr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
(author)
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Ctr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R ChinaShandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
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In:Chemistry of Materials: AMER CHEMICAL SOC32:1, s. 459-4670897-47561520-5002
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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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