| Title: | Strain-gradient and curvature-induced changes in domain morphology of ▫$BaTiO_3$▫ nanorods : Experimental and theoretical studies |
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| Authors: | ID Kovalenko, Olha A., Institut "Jožef Stefan" (Author)
ID Eliseev, Eugene A. (Author)
ID Zagorodniy, Yuriy O. (Author)
ID Škapin, Srečo D., Institut "Jožef Stefan" (Author)
ID Maček, Marjeta, Institut "Jožef Stefan" (Author)
ID Demchenko, Lesya D. (Author)
ID Laguta, Valentin V. (Author)
ID Kutnjak, Zdravko, Institut "Jožef Stefan" (Author)
ID Evans, Dean R. (Author)
ID Morozovska, Anna N. (Author) |
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| Files: |  URL - Source URL, visit https://journals.aps.org/prmaterials/abstract/10.1103/b332-gcxc
 PDF - Presentation file, download (3,79 MB)
MD5: 2C9AC4C13F05B5DBC13C8658CA06343A
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | We investigate the impact of OH− ions incorporation on the lattice strain and spontaneous polarization of BaTiO3 nanorods synthesized under different conditions. It was confirmed that the lattice strain depends directly on Ba supersaturation, with higher supersaturation leading to an increase in the lattice strain. However, it was shown that crystal growth and observed lattice distortion are not primarily influenced by external strain; rather, OH− ions incorporation plays a key role in generating internal chemical strains and driving these processes. By using the less reactive TiO2 precursor instead of TiOCl2 and controlling Ba supersaturation, the slower nucleation rate enables more effective regulation of OH− ions incorporation and crystal growth. This in turn effects both particle size and lattice distortion, leading to �/� ratio of 1.013–1.014. The incorporation of OH− ions induces lattice elongation along the � axis, contributing to anisotropic growth, increasing of the rod diameter and their growth-induced bending. However, the possibility of the curvature-induced changes in domain morphology of BaTiO3 nanorods remains almost unexplored. To study the possibility, we perform analytical calculations and finite element modeling, which provide insights into the curvature-induced changes in the strain-gradient, polarization distribution, and domain morphology in BaTiO3 nanorods. Theoretical results reveal the appearance of the domain stripes in BaTiO3 nanorod when the curvature exceeds a critical angle. The physical origin of the domain stripes emergence is the tendency to minimize the elastic energy of the nanorod by the domain splitting. These findings suggest that BaTiO3 nanorods, with curvature-controllable amount of domain stripes, could serve as flexible race-track memory elements for flexotronics and domain-wall electronics. Overall, this work enhances the understanding of how the shape anisotropy, lattice strains, and strain gradients influence the domain morphology of ferroelectric nanorods, offering a pathway for tuning properties of the nanorods for advanced applications in nanoelectronics. |
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| Keywords: | nanorods, lattice strain, nanoelectronics, domain morphology |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 15.01.2026 |
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| Article acceptance date: | 08.04.2026 |
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| Publication date: | 28.04.2026 |
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| Publisher: | American Physical Society |
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| Year of publishing: | 2026 |
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| Number of pages: | str. 044409-1-044409-17 |
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| Numbering: | Vol. 10, iss. 4, [article no.] 044409 |
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| Source: | ZDA |
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| PID: | 20.500.12556/DiRROS-29239  |
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| UDC: | 54 |
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| ISSN on article: | 2475-9953 |
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| DOI: | 10.1103/b332-gcxc |
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| COBISS.SI-ID: | 276783363 |
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| Note: | Nasl. z nasl. zaslona;
Soavtorji iz Slovenije: Srečo David Škapin, Marjeta Maček Kržmanc, Zdravko Kutnjak;
Opis vira z dne 30. 4. 2026;
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| Publication date in DiRROS: | 30.04.2026 |
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| Views: | 39 |
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| Downloads: | 27 |
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