Abnormal variation of band gap in Zn doped Bi{sub 0.9}La{sub 0.1}FeO{sub 3} nanoparticles: Role of Fe-O-Fe bond angle and Fe-O bond anisotropy
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin 300072 (China)
- College of Physics and Materials Science, Tianjin Normal University, Tianjin 300074 (China)
- Department of Physics, The University of Hong Kong, Pokfulam Road (Hong Kong)
- Department of Information Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, Guangxi (China)
Bi{sub 0.9}La{sub 0.1}FeO{sub 3} (BLFO) and Bi{sub 0.9}La{sub 0.1}Fe{sub 0.99}Zn{sub 0.01}O{sub 3} (BLFZO) nanoparticles were prepared via a sol-gel method. The oxygen vacancies and holes increase with Zn doping analyzed through X-ray photoelectron spectroscopy, which could contribute to the increase of leakage current density. However, with the increase of the defects (oxygen vacancies and holes), the band gap of BLFZO also is increased. To explain the abnormal phenomenon, the bandwidth of occupied and unoccupied bands was analyzed based on the structural symmetry driven by the Fe-O-Fe bond angle and Fe-O bond anisotropy.
- OSTI ID:
- 22486386
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 4 Vol. 107; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Enhanced magnetoelectric sensitivity in Co{sub 0.7}Zn{sub 0.3}Fe{sub 2}O{sub 4}–Bi{sub 0.9}La{sub 0.1}FeO{sub 3} nanocomposites
Oxygen vacancies induced switchable and nonswitchable photovoltaic effects in Ag/Bi{sub 0.9}La{sub 0.1}FeO{sub 3} /La{sub 0.7}Sr{sub 0.3}MnO{sub 3} sandwiched capacitors
Effect of Pr- and Nd- doping on structural, dielectric, and magnetic properties of multiferroic Bi{sub 0.8}La{sub 0.2}Fe{sub 0.9}Mn{sub 0.1}O{sub 3}
Journal Article
·
Fri Mar 15 00:00:00 EDT 2013
· Materials Research Bulletin
·
OSTI ID:22290410
Oxygen vacancies induced switchable and nonswitchable photovoltaic effects in Ag/Bi{sub 0.9}La{sub 0.1}FeO{sub 3} /La{sub 0.7}Sr{sub 0.3}MnO{sub 3} sandwiched capacitors
Journal Article
·
Sun Jan 19 23:00:00 EST 2014
· Applied Physics Letters
·
OSTI ID:22280613
Effect of Pr- and Nd- doping on structural, dielectric, and magnetic properties of multiferroic Bi{sub 0.8}La{sub 0.2}Fe{sub 0.9}Mn{sub 0.1}O{sub 3}
Journal Article
·
Mon Apr 07 00:00:00 EDT 2014
· Journal of Applied Physics
·
OSTI ID:22273658