Stable antivortices in multiferroic ε-Fe2O3 with the coalescence of misaligned grains
Abstract Antivortices have potential applications in future nano-functional devices, yet the formation of isolated antivortices traditionally requires nanoscale dimensions and near-zero magnetocrystalline anisotropy, limiting their broader application. Here, we propose an approach to forming antivor...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-55841-x |
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| author | Wuhong Xue Tao Wang Huali Yang Huanhuan Zhang Guohong Dai Sheng Zhang Ruilong Yang Zhiyong Quan Run-Wei Li Jin Tang Cheng Song Xiaohong Xu |
| author_facet | Wuhong Xue Tao Wang Huali Yang Huanhuan Zhang Guohong Dai Sheng Zhang Ruilong Yang Zhiyong Quan Run-Wei Li Jin Tang Cheng Song Xiaohong Xu |
| author_sort | Wuhong Xue |
| collection | DOAJ |
| description | Abstract Antivortices have potential applications in future nano-functional devices, yet the formation of isolated antivortices traditionally requires nanoscale dimensions and near-zero magnetocrystalline anisotropy, limiting their broader application. Here, we propose an approach to forming antivortices in multiferroic ε-Fe2O3 with the coalescence of misaligned grains. By leveraging misaligned crystal domains, the large magnetocrystalline anisotropy energy is counterbalanced, thereby stabilizing the ground state of the antivortex. This method overcomes the traditional difficulty of observing isolated antivortices in micron-sized samples. Stable isolated antivortices were observed in truncated triangular multiferroic ε-Fe2O3 polycrystals ranging from 2.9 to 16.7 µm. Furthermore, the unpredictability of the polarity of the core was utilized as a source of entropy for designing physically unclonable functions. Our findings expand the range of antivortex materials into the multiferroic perovskite oxides and provide a potential opportunity for ferroelectric polarization control of antivortices. |
| format | Article |
| id | doaj-art-d834359254944d7cabac9981e95db0e9 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-d834359254944d7cabac9981e95db0e92025-01-12T12:30:31ZengNature PortfolioNature Communications2041-17232025-01-011611710.1038/s41467-025-55841-xStable antivortices in multiferroic ε-Fe2O3 with the coalescence of misaligned grainsWuhong Xue0Tao Wang1Huali Yang2Huanhuan Zhang3Guohong Dai4Sheng Zhang5Ruilong Yang6Zhiyong Quan7Run-Wei Li8Jin Tang9Cheng Song10Xiaohong Xu11Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science of Shanxi Normal UniversityKey Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science of Shanxi Normal UniversityCAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of SciencesSchool of Physics and Optoelectronic Engineering, Anhui UniversitySchool of Physics and Materials Science & Institute of Space Science and Technology, Nanchang UniversityKey Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science of Shanxi Normal UniversityKey Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science of Shanxi Normal UniversityKey Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science of Shanxi Normal UniversityCAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of SciencesSchool of Physics and Optoelectronic Engineering, Anhui UniversitySchool of Materials Science and Engineering, Tsinghua UniversityKey Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science of Shanxi Normal UniversityAbstract Antivortices have potential applications in future nano-functional devices, yet the formation of isolated antivortices traditionally requires nanoscale dimensions and near-zero magnetocrystalline anisotropy, limiting their broader application. Here, we propose an approach to forming antivortices in multiferroic ε-Fe2O3 with the coalescence of misaligned grains. By leveraging misaligned crystal domains, the large magnetocrystalline anisotropy energy is counterbalanced, thereby stabilizing the ground state of the antivortex. This method overcomes the traditional difficulty of observing isolated antivortices in micron-sized samples. Stable isolated antivortices were observed in truncated triangular multiferroic ε-Fe2O3 polycrystals ranging from 2.9 to 16.7 µm. Furthermore, the unpredictability of the polarity of the core was utilized as a source of entropy for designing physically unclonable functions. Our findings expand the range of antivortex materials into the multiferroic perovskite oxides and provide a potential opportunity for ferroelectric polarization control of antivortices.https://doi.org/10.1038/s41467-025-55841-x |
| spellingShingle | Wuhong Xue Tao Wang Huali Yang Huanhuan Zhang Guohong Dai Sheng Zhang Ruilong Yang Zhiyong Quan Run-Wei Li Jin Tang Cheng Song Xiaohong Xu Stable antivortices in multiferroic ε-Fe2O3 with the coalescence of misaligned grains Nature Communications |
| title | Stable antivortices in multiferroic ε-Fe2O3 with the coalescence of misaligned grains |
| title_full | Stable antivortices in multiferroic ε-Fe2O3 with the coalescence of misaligned grains |
| title_fullStr | Stable antivortices in multiferroic ε-Fe2O3 with the coalescence of misaligned grains |
| title_full_unstemmed | Stable antivortices in multiferroic ε-Fe2O3 with the coalescence of misaligned grains |
| title_short | Stable antivortices in multiferroic ε-Fe2O3 with the coalescence of misaligned grains |
| title_sort | stable antivortices in multiferroic ε fe2o3 with the coalescence of misaligned grains |
| url | https://doi.org/10.1038/s41467-025-55841-x |
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