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Title: Manipulating multiple order parameters via oxygen vacancies: The case of E u 0.5 B a 0.5 Ti O 3 - δ

Journal Article · · Physical Review B
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  1. Nanjing Univ. of Aeronautics and Astronautics (China). College of Science; Univ. of Cambridge (United Kingdom). Dept. of Materials Science and Metallurgy
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  3. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics. Inst. of Physics
  4. Univ. of Electronic Science and Technology of China, Chengdu (China). State Key Lab. of Electronic Thin Films and Integrated Devices
  5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  6. Chinese Academy of Sciences (CAS), Hefei (China). High Magnetic Field Lab.
  7. Texas A & M Univ., College Station, TX (United States). Materials Science and Engineering Program. Dept. of Electrical and Computer Engineering
  8. Nanjing Univ. of Aeronautics and Astronautics (China). College of Science
  9. Soochow Univ., Suzhou (China). College of Physics, Optoelectronics and Energy
  10. National Inst. of Scientific Research-Energy, Materials and Telecommunications (INRS-EMT), Varennes, QC (Canada)
  11. Soochow Univ., Suzhou (China). Center for Soft Condensed Matter Physics and Interdisciplinary Research
  12. Chinese Academy of Sciences (CAS), Ningbo (China). Key Lab. of Magnetic Materials and Devices. Ningbo Inst. of Materials Technology and Engineering
+ Show Author Affiliations

Controlling functionalities, such as magnetism or ferroelectricity, by means of oxygen vacancies ($${V}_{\mathrm{O}}$$) is a key issue for the future development of transition-metal oxides. Progress in this field is currently addressed through $${V}_{\mathrm{O}}$$ variations and their impact on mainly one order parameter. In this paper, we reveal a mechanism for tuning both magnetism and ferroelectricity simultaneously by using $${V}_{\mathrm{O}}$$. Combining experimental and density-functional theory studies of $$\mathrm{E}{\mathrm{u}}_{0.5}\mathrm{B}{\mathrm{a}}_{0.5}\mathrm{Ti}{\mathrm{O}}_{3{-}{\delta}}$$, we demonstrate that oxygen vacancies create $$\mathrm{T}{\mathrm{i}}^{3+}3{d}^{1}$$ defect states, mediating the ferromagnetic coupling between the localized Eu $$4{f}^{7}$$ spins, and increase an off-center displacement of Ti ions, enhancing the ferroelectric Curie temperature. Finally, the dual function of Ti sites also promises a magnetoelectric coupling in the $$\mathrm{E}{\mathrm{u}}_{0.5}\mathrm{B}{\mathrm{a}}_{0.5}\mathrm{Ti}{\mathrm{O}}_{3{-}{\delta}}$$.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Texas A & M Univ., College Station, TX (United States); Nanjing Univ. of Aeronautics and Astronautics (China); Soochow University, Suzhou (China); Chinese Academy of Sciences (CAS), Beijing (China); National Inst. of Scientific Research-Energy, Materials and Telecommunications (INRS-EMT), Varennes, QC (Canada)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); National Basic Research Program of China; National Natural Science Foundation of China (NSFC); Program for Postgraduates Research Innovation in University of Jiangsu Province (China); Natural Sciences and Engineering Research Council of Canada (NSERC); Fonds de recherche du Québec - Nature et technologies (FRQNT) (Canada)
Grant/Contract Number:
AC52-06NA25396; DMR-1643911; DMR-1565822; 2014CB921001; 11274237; U1632122; 11004145; 51202153; U1332209; U1435208; 11134012; 11174355; 11474349; 11227405; CXZZ13_0798
OSTI ID:
1457304
Alternate ID(s):
OSTI ID: 1378818
Report Number(s):
LA-UR-15-29487; TRN: US1901351
Journal Information:
Physical Review B, Vol. 96, Issue 11; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

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Cited By (8)

Interface Engineered Room‐Temperature Ferromagnetic Insulating State in Ultrathin Manganite Films journal November 2019
Origin of Improved Photoelectrochemical Water Splitting in Mixed Perovskite Oxides journal September 2018
A DFT investigation of the role of oxygen vacancies on the structural, electronic and magnetic properties of ATiO 3 (A = Mn, Fe, Ni) multiferroic materials journal January 2018
Oxygen-vacancy-mediated dielectric property in perovskite Eu 0.5 Ba 0.5 TiO 3-δ epitaxial thin films journal April 2018
Oxygen-vacancy-mediated dielectric property in perovskite Eu0.5Ba0.5TiO3-δ epitaxial thin films text January 2018
Origin of Improved Photoelectrochemical Water Splitting in Mixed Perovskite Oxides text January 2018
Interface Engineered Room-Temperature Ferromagnetic Insulating State in Ultrathin Manganite Films. text January 2020
Interface Engineered Room-Temperature Ferromagnetic Insulating State in Ultrathin Manganite Films. text January 2019

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Related Subjects

36 MATERIALS SCIENCE
ferroelectricity
magnetoelectric effect
vacancies
multiferroics
oxides
thin films
transition metals
magnetization measurements
optical second-harmonic generation