Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3082097
Keywords
ceramics; doping; europium; magnetisation; paramagnetic materials; permittivity; photoluminescence; strontium compounds
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Funding
- National Natural Science Foundations of China [60721063, 50702036]
- Natural Science Foundation of Jiangsu Education Committee of China [08KJB140008, BK2008020]
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The structural, luminescent, dielectric, and magnetic properties of multifunction Eu3+-doped SrTiO3 (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 Eu3+ doped STO and was sensitive to the Eu doping concentrations.
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