کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1597089 | 1002914 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Variable-temperature Raman scattering and X-ray diffraction studies of Bi3.25Nd0.75Ti3O12 ceramics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Neodymium-substituted bismuth titanate (Bi3.25Nd0.75Ti3O12, BNT0.75) ceramics was prepared by chemical co-precipitation along with calcinations. The lattice instability has been investigated by variable-temperature Raman scattering and X-ray diffraction. The results showed that there was an orthorhombic to pseudo-tetragonal phase transition at about 695Â K, in terms of the evolution of temperature dependence of Raman scattering frequencies. Some changes at about 695Â K in the XRD lines, the lattice parameters (a, b, and c) as well as the orthorhombic distortion b/a have been detected in the high temperature X-ray diffraction, which confirmed the conclusion that the BNT0.75 ceramics undergoes a ferroelectric to paraelectric phase transition at about 695Â K.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 138, Issue 5, May 2006, Pages 229-233
Journal: Solid State Communications - Volume 138, Issue 5, May 2006, Pages 229-233
نویسندگان
Y.H. Wang, C.P. Huang, Y.Y. Zhu,