title: Vertical Interface Induced Dielectric Relaxation in Nanocomposite (BaTiO3)1-x:(Sm2O3)x Thin Films.
abstract: Vertical interfaces in vertically aligned nanocomposite thin films have been approved to be an effective method to manipulate functionalities. However, several challenges with regard to the understanding on the physical process underlying the manipulation still remain. In this work, because of the ordered interfaces and large interfacial area, heteroepitaxial (BaTiO3)1-x:(Sm2O3)x thin films have been fabricated and used as a model system to investigate the relationship between vertical interfaces and dielectric properties. Due to a relatively large strain generated at the interfaces, vertical interfaces between BaTiO3 and Sm2O3 are revealed to become the sinks to attract oxygen vacancies. The movement of oxygen vacancies is confined at the interfaces and hampered by the misfit dislocations, which contributed to a relaxation behavior in (BaTiO3)1-x:(Sm2O3)x thin films. This work represents an approach to further understand that how interfaces influence on dielectric properties in oxide thin films.
authors.affiliation: 1] College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China [2] College of Physics, Optoelectronics and Energy &Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Li
authors.affiliation: College of Physics, Optoelectronics and Energy &Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Science, Beijing 100190, China.
authors.forename: Le
authors.initials: L
authors.lastname: Wang
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Science, Beijing 100190, China.
authors.forename: Junxing
authors.initials: J
authors.lastname: Gu
authors.affiliation: Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843-3128, USA.
authors.forename: Aiping
authors.initials: A
authors.lastname: Chen
authors.affiliation: College of Physics, Optoelectronics and Energy &Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China.
authors.forename: Run
authors.initials: R
authors.lastname: Zhao
authors.affiliation: College of Physics, Optoelectronics and Energy &Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Liang
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Science, Beijing 100190, China.
authors.forename: Haizhong
authors.initials: H
authors.lastname: Guo
authors.affiliation: College of Physics, Optoelectronics and Energy &Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China.
authors.forename: Rujun
authors.initials: R
authors.lastname: Tang
authors.affiliation: School of Physics and Materials Science, Anhui University, Hefei 230039, China.
authors.forename: Chunchang
authors.initials: C
authors.lastname: Wang
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Science, Beijing 100190, China.
authors.forename: Kuijuan
authors.initials: K
authors.lastname: Jin
authors.affiliation: Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843-3128, USA.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Wang
authors.affiliation: 1] College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China [2] College of Physics, Optoelectronics and Energy &Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Yang