Unexpected Piezoresistive Effect, Room‐Temperature Ferromagnetism, and Thermal Stability of 2D β‐CuI Crystals in Reduced Graphene Oxide Membrane
Abstract 2D materials are promising nanomaterials for future applications due to their predominant quantum effects and unique properties in optics, electrics, magnetics, and mechanics. However, explorations in unique properties and potential applications of novel 2D materials have been hampered by s...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-05-01
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| Series: | Advanced Electronic Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/aelm.202201241 |
| _version_ | 1797672158381473792 |
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| author | Bingquan Peng Quan Zhang Yueyu Zhang Yimin Zhao Shengyue Hou Yizhou Yang Fangfang Dai Ruobing Yi Ruoyang Chen Jun Wang Lei Zhang Liang Chen Shengli Zhang Haiping Fang |
| author_facet | Bingquan Peng Quan Zhang Yueyu Zhang Yimin Zhao Shengyue Hou Yizhou Yang Fangfang Dai Ruobing Yi Ruoyang Chen Jun Wang Lei Zhang Liang Chen Shengli Zhang Haiping Fang |
| author_sort | Bingquan Peng |
| collection | DOAJ |
| description | Abstract 2D materials are promising nanomaterials for future applications due to their predominant quantum effects and unique properties in optics, electrics, magnetics, and mechanics. However, explorations in unique properties and potential applications of novel 2D materials have been hampered by synthesis and their stability under ambient conditions. Recently, in the graphene, 2D β‐CuI is observed experimentally under ambient conditions. Here, it is shown that this 2D β‐CuI@graphene possesses unexpected piezoresistive effect and room‐temperature ferromagnetism. Moreover, this 2D β‐CuI crystal is likely to be stable in a wide range of temperature, that is, below 900 K. Theoretical studies reveal that the unexpected piezoresistive effect is mainly attributable to the convergence of the electrons on Cu and I atoms to the Fermi level with increasing strain. There is a magnetic moment that is ≈0.97 μB on the edge of β‐CuI nanocrystal created by an iodine vacancy, which is considered the origin of such strong room‐temperature ferromagnetism. Clearly, the 2D β‐CuI@graphene provides a promising nanomaterial in the nano‐sensors with low power consumption pressure and magnetic nano‐devices with a size down to atomic scale. The discovery in the present work will evoke various new 2D nanomaterials with novel properties in nanotechnology, biotechnology, sensor materials, and technologies. |
| first_indexed | 2024-03-11T21:26:05Z |
| format | Article |
| id | doaj.art-92d1b815652948f7a43b288e56efa85c |
| institution | Directory Open Access Journal |
| issn | 2199-160X |
| language | English |
| last_indexed | 2024-03-11T21:26:05Z |
| publishDate | 2023-05-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Electronic Materials |
| spelling | doaj.art-92d1b815652948f7a43b288e56efa85c2023-09-28T04:47:10ZengWiley-VCHAdvanced Electronic Materials2199-160X2023-05-0195n/an/a10.1002/aelm.202201241Unexpected Piezoresistive Effect, Room‐Temperature Ferromagnetism, and Thermal Stability of 2D β‐CuI Crystals in Reduced Graphene Oxide MembraneBingquan Peng0Quan Zhang1Yueyu Zhang2Yimin Zhao3Shengyue Hou4Yizhou Yang5Fangfang Dai6Ruobing Yi7Ruoyang Chen8Jun Wang9Lei Zhang10Liang Chen11Shengli Zhang12Haiping Fang13Wenzhou Institute University of Chinese Academy of Sciences Wenzhou Zhejiang 325000 ChinaMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of Physics Xi'an Jiaotong University Xi'an 710049 ChinaWenzhou Institute University of Chinese Academy of Sciences Wenzhou Zhejiang 325000 ChinaMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of Physics Xi'an Jiaotong University Xi'an 710049 ChinaWenzhou Institute University of Chinese Academy of Sciences Wenzhou Zhejiang 325000 ChinaSchool of Physics East China University of Science and Technology Shanghai 200237 ChinaWenzhou Institute University of Chinese Academy of Sciences Wenzhou Zhejiang 325000 ChinaMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of Physics Xi'an Jiaotong University Xi'an 710049 ChinaSchool of Physics East China University of Science and Technology Shanghai 200237 ChinaSchool of Physics East China University of Science and Technology Shanghai 200237 ChinaMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of Physics Xi'an Jiaotong University Xi'an 710049 ChinaSchool of Physical Science and Technology Ningbo University Ningbo 315211 ChinaMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of Physics Xi'an Jiaotong University Xi'an 710049 ChinaWenzhou Institute University of Chinese Academy of Sciences Wenzhou Zhejiang 325000 ChinaAbstract 2D materials are promising nanomaterials for future applications due to their predominant quantum effects and unique properties in optics, electrics, magnetics, and mechanics. However, explorations in unique properties and potential applications of novel 2D materials have been hampered by synthesis and their stability under ambient conditions. Recently, in the graphene, 2D β‐CuI is observed experimentally under ambient conditions. Here, it is shown that this 2D β‐CuI@graphene possesses unexpected piezoresistive effect and room‐temperature ferromagnetism. Moreover, this 2D β‐CuI crystal is likely to be stable in a wide range of temperature, that is, below 900 K. Theoretical studies reveal that the unexpected piezoresistive effect is mainly attributable to the convergence of the electrons on Cu and I atoms to the Fermi level with increasing strain. There is a magnetic moment that is ≈0.97 μB on the edge of β‐CuI nanocrystal created by an iodine vacancy, which is considered the origin of such strong room‐temperature ferromagnetism. Clearly, the 2D β‐CuI@graphene provides a promising nanomaterial in the nano‐sensors with low power consumption pressure and magnetic nano‐devices with a size down to atomic scale. The discovery in the present work will evoke various new 2D nanomaterials with novel properties in nanotechnology, biotechnology, sensor materials, and technologies.https://doi.org/10.1002/aelm.202201241piezoresistive effectsroom‐temperature ferromagnetismtwo‐dimensional β‐CuI crystals |
| spellingShingle | Bingquan Peng Quan Zhang Yueyu Zhang Yimin Zhao Shengyue Hou Yizhou Yang Fangfang Dai Ruobing Yi Ruoyang Chen Jun Wang Lei Zhang Liang Chen Shengli Zhang Haiping Fang Unexpected Piezoresistive Effect, Room‐Temperature Ferromagnetism, and Thermal Stability of 2D β‐CuI Crystals in Reduced Graphene Oxide Membrane Advanced Electronic Materials piezoresistive effects room‐temperature ferromagnetism two‐dimensional β‐CuI crystals |
| title | Unexpected Piezoresistive Effect, Room‐Temperature Ferromagnetism, and Thermal Stability of 2D β‐CuI Crystals in Reduced Graphene Oxide Membrane |
| title_full | Unexpected Piezoresistive Effect, Room‐Temperature Ferromagnetism, and Thermal Stability of 2D β‐CuI Crystals in Reduced Graphene Oxide Membrane |
| title_fullStr | Unexpected Piezoresistive Effect, Room‐Temperature Ferromagnetism, and Thermal Stability of 2D β‐CuI Crystals in Reduced Graphene Oxide Membrane |
| title_full_unstemmed | Unexpected Piezoresistive Effect, Room‐Temperature Ferromagnetism, and Thermal Stability of 2D β‐CuI Crystals in Reduced Graphene Oxide Membrane |
| title_short | Unexpected Piezoresistive Effect, Room‐Temperature Ferromagnetism, and Thermal Stability of 2D β‐CuI Crystals in Reduced Graphene Oxide Membrane |
| title_sort | unexpected piezoresistive effect room temperature ferromagnetism and thermal stability of 2d β cui crystals in reduced graphene oxide membrane |
| topic | piezoresistive effects room‐temperature ferromagnetism two‐dimensional β‐CuI crystals |
| url | https://doi.org/10.1002/aelm.202201241 |
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