Effects of Eu substituting positions and concentrations on luminescent, dielectric, and magnetic properties of SrTiO{sub 3} ceramics

Journal Article · Mon Feb 16 04:00:00 EST 2009 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3082097· OSTI ID:21175967

Chunge, Jiang; Liang, Fang; Mingrong, Shen; Fengang, Zheng ^[1]; Xinglong, Wu ^[2]

---

1. Department of Physics and Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006 (China)
2. Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 (China)

The structural, luminescent, dielectric, and magnetic properties of multifunction Eu{sup 3+}-doped SrTiO{sub 3} (STO) ceramics were investigated at room temperature. Three different charge compensation mechanisms were realized by substituting Eu ion at different sites. It was found that the multifunction properties of the samples strongly depended on the substituting positions of Eu ion. Compared with Eu substitution at Sr or Ti site samples, the photoluminescence intensities and dielectric constant of both Sr and Ti sites substituted samples were obviously enhanced, mainly ascribed to the small lattice distortion and unique charge compensation mechanism. A linear magnetization-magnetic field behavior revealed the paramagnetic nature of the Eu{sup 3+} doped STO and was sensitive to the Eu doping concentrations.

• OSTI ID: 21175967
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 7 Vol. 94; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
DIELECTRIC MATERIALS
DOPED MATERIALS
EUROPIUM
EUROPIUM IONS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIZATION
PARAMAGNETISM
PERMITTIVITY
PHOTOLUMINESCENCE
STRONTIUM TITANATES
TEMPERATURE RANGE 0273-0400 K