Evolution of the structural phase and orientation in ultrathin SrRuO3 film with SrTiO3 capping layer
Abstract In a perovskite oxide of $$\text {ABO}_3$$ , the $$\text {BO}_6$$ octahedral rotation and tilting are known to result in a structural distortion and transform the crystalline structure to a lower symmetry phase, such as the tetragonal phase (T-phase) and distorted orthorhombic phase (O-phas...
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Nature Portfolio
2025-05-01
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| Online Access: | https://doi.org/10.1038/s41598-025-00408-5 |
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| author | Akhilesh Kr. Singh Song Yang Uddipta Kar Guan-Ruei Chen Shih-Chang Weng Chia-Hung Hsu Wei-Li Lee |
| author_facet | Akhilesh Kr. Singh Song Yang Uddipta Kar Guan-Ruei Chen Shih-Chang Weng Chia-Hung Hsu Wei-Li Lee |
| author_sort | Akhilesh Kr. Singh |
| collection | DOAJ |
| description | Abstract In a perovskite oxide of $$\text {ABO}_3$$ , the $$\text {BO}_6$$ octahedral rotation and tilting are known to result in a structural distortion and transform the crystalline structure to a lower symmetry phase, such as the tetragonal phase (T-phase) and distorted orthorhombic phase (O-phase). Here, we present the observation of such structural transformation in 6 unit cell (uc) ultrathin films of $$\text {SrRuO}_3$$ (SRO) driven by an additional $$\text {SrTiO}_3$$ (STO) capping layer. A series of nominal STO (x uc)/SRO (6 uc) films with x ranging from 0 to 8 were grown on STO (001) substrates using an oxide molecular beam system with adsorption-controlled growth technique for SRO and layer-by-layer growth technique for STO. Systematic high-resolution X-ray diffraction measurements revealed a clear transition from the T-phase for x = 0 to the O-phase for x = 2 and 8, which was accompanied by a change of the structural orientation from (001)-oriented SRO in T-phase to (110)-oriented SRO in O-phase. Our findings highlight the possibility of intriguing interface-driven structural phase and orientation transformations in a perovskite oxide system. |
| format | Article |
| id | doaj-art-8dbb26a2ee934bd0a58d40b201086a2c |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
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| spelling | doaj-art-8dbb26a2ee934bd0a58d40b201086a2c2025-08-20T03:48:18ZengNature PortfolioScientific Reports2045-23222025-05-011511910.1038/s41598-025-00408-5Evolution of the structural phase and orientation in ultrathin SrRuO3 film with SrTiO3 capping layerAkhilesh Kr. Singh0Song Yang1Uddipta Kar2Guan-Ruei Chen3Shih-Chang Weng4Chia-Hung Hsu5Wei-Li Lee6Institute of Physics, Academia SinicaNational Synchrotron Radiation Research CenterInstitute of Physics, Academia SinicaNational Synchrotron Radiation Research CenterNational Synchrotron Radiation Research CenterNational Synchrotron Radiation Research CenterInstitute of Physics, Academia SinicaAbstract In a perovskite oxide of $$\text {ABO}_3$$ , the $$\text {BO}_6$$ octahedral rotation and tilting are known to result in a structural distortion and transform the crystalline structure to a lower symmetry phase, such as the tetragonal phase (T-phase) and distorted orthorhombic phase (O-phase). Here, we present the observation of such structural transformation in 6 unit cell (uc) ultrathin films of $$\text {SrRuO}_3$$ (SRO) driven by an additional $$\text {SrTiO}_3$$ (STO) capping layer. A series of nominal STO (x uc)/SRO (6 uc) films with x ranging from 0 to 8 were grown on STO (001) substrates using an oxide molecular beam system with adsorption-controlled growth technique for SRO and layer-by-layer growth technique for STO. Systematic high-resolution X-ray diffraction measurements revealed a clear transition from the T-phase for x = 0 to the O-phase for x = 2 and 8, which was accompanied by a change of the structural orientation from (001)-oriented SRO in T-phase to (110)-oriented SRO in O-phase. Our findings highlight the possibility of intriguing interface-driven structural phase and orientation transformations in a perovskite oxide system.https://doi.org/10.1038/s41598-025-00408-5$$\text {SrRuO}_3$$Ultrathin film structure$$\text {SrTiO}_3$$Structural phase and orientationComplex oxide interface |
| spellingShingle | Akhilesh Kr. Singh Song Yang Uddipta Kar Guan-Ruei Chen Shih-Chang Weng Chia-Hung Hsu Wei-Li Lee Evolution of the structural phase and orientation in ultrathin SrRuO3 film with SrTiO3 capping layer Scientific Reports $$\text {SrRuO}_3$$ Ultrathin film structure $$\text {SrTiO}_3$$ Structural phase and orientation Complex oxide interface |
| title | Evolution of the structural phase and orientation in ultrathin SrRuO3 film with SrTiO3 capping layer |
| title_full | Evolution of the structural phase and orientation in ultrathin SrRuO3 film with SrTiO3 capping layer |
| title_fullStr | Evolution of the structural phase and orientation in ultrathin SrRuO3 film with SrTiO3 capping layer |
| title_full_unstemmed | Evolution of the structural phase and orientation in ultrathin SrRuO3 film with SrTiO3 capping layer |
| title_short | Evolution of the structural phase and orientation in ultrathin SrRuO3 film with SrTiO3 capping layer |
| title_sort | evolution of the structural phase and orientation in ultrathin srruo3 film with srtio3 capping layer |
| topic | $$\text {SrRuO}_3$$ Ultrathin film structure $$\text {SrTiO}_3$$ Structural phase and orientation Complex oxide interface |
| url | https://doi.org/10.1038/s41598-025-00408-5 |
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