Title of article
Crystal structure and dielectric properties of ferroelectric ceramics in the BaO-Sm2O3-TiO2-Nb2O5 system
Author/Authors
Zheng، نويسنده , , X.H. and Chen، نويسنده , , X.M.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
6
From page
449
To page
454
Abstract
Some tungsten–bronze ferroelectrics were synthesized and characterized in the BaO-Sm2O3-TiO2-Nb2O5 system. Ba4Sm2Ti4Nb6O30 and Ba5SmTi3Nb7O30 had the tetragonal filled tungsten–bronze structure; while Ba3Sm3Ti5Nb5O30 consisted of the orthorhombic tungsten–bronze major phase and the BaTi4O9 secondary phase. The present dielectric ceramics exhibited relaxor behavior with the maximum temperatures around 185, 285 and 130 °C for Ba3Sm3Ti5Nb5O30, Ba4Sm2Ti4Nb6O30 and Ba5SmTi3Nb7O30, respectively. Moreover, Ba3Sm3Ti5Nb5O30 exhibited a second possible phase transition around 93 °C.
Keywords
C. Tungsten–bronze structure , C. X-ray diffraction , D. Dielectric properties , C. DSC , D. Phase transition
Journal title
Solid State Communications
Serial Year
2003
Journal title
Solid State Communications
Record number
1762691
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