Localized Control of Curie Temperature in Perovskite Oxide Film by Capping-Layer-Induced Octahedral Distortion
- Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
- Univ. of Twente, Enschede (Netherlands). MESA+ Inst. for Nanotechnology
- Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy; Soochow Univ., Suzhou, Jiangsu (China). College of Physics, Optoelectronics and Energy
- Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials
- Chinese Academy of Sciences (CAS), Ningbo (China). Key Lab. of Magnetic Materials and Devices & Zhejiang Province Key Lab. of Magnetic Materials and Application Technology, Ningbo Inst. of Materials Technology and Engineering
With reduced dimensionality, it is often easier to modify the properties of ultrathin films than their bulk counterparts. Strain engineering, usually achieved by choosing appropriate substrates, has been proven effective in controlling the properties of perovskite oxide films. An emerging alternative route for developing new multifunctional perovskite is by modification of the oxygen octahedral structure. Here we report the control of structural oxygen octahedral rotation in ultrathin perovskite SrRuO3 films by the deposition of a SrTiO3 capping layer, which can be lithographically patterned to achieve local control. Here, using a scanning Sagnac magnetic microscope, we show an increase in the Curie temperature of SrRuO3 due to the suppression octahedral rotations revealed by the synchrotron x-ray diffraction. Lastly, this capping-layer-based technique may open new possibilities for developing functional oxide materials.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE; National Science Foundation (NSF)
- Grant/Contract Number:
- DMR-1350122; ECCS-1542152; FG02-05ER46237; AC02-76SF00515
- OSTI ID:
- 1410802
- Alternate ID(s):
- OSTI ID: 1405207
- Journal Information:
- Physical Review Letters, Vol. 119, Issue 17; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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