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This content will become publicly available on October 27, 2018

Title: Localized Control of Curie Temperature in Perovskite Oxide Film by Capping-Layer-Induced Octahedral Distortion

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 SrRuO 3 films by the deposition of a SrTiO 3 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 SrRuO 3 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.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5] ;  [2] ;  [4] ;  [1] ;  [2] ;  [1]
  1. Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
  2. Univ. of Twente, Enschede (Netherlands). MESA+ Inst. for Nanotechnology
  3. Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy; Soochow Univ., Suzhou, Jiangsu (China). College of Physics, Optoelectronics and Energy
  4. Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials
  5. 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
Publication Date:
Grant/Contract Number:
DMR-1350122; ECCS-1542152; FG02-05ER46237; AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 119; Journal Issue: 17; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE; National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1410802
Alternate Identifier(s):
OSTI ID: 1405207