کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10713918 | 1025561 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impedance spectroscopy and structural properties of the perovskite-like Sn(Ba,Sr)O3 stagnate
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
An exhaustive study of structural, electrical and transport properties on the perovskite stagnate Sn(Ba,Sr)O3 was performed. Samples of SnBa1âxSrxO3 with 0â¤xâ¤1.00 were prepared by the solid state reaction method. The crystallographic structure was studied by X-ray diffraction experiments and Rietveld refinement using the GSAS code. Results reveal the material synthesized in a cubic structure (space group Pm3Ìm, #221) for 0â¤xâ¤0.50 and in an orthorhombic (space group Pnma, #62) for x>0.50. The approximate grain size was found from experiments' Scanning Electron Microscopy. The electric response was studied by the Impedance Spectroscopy technique from 10.0 mHz up to 0,10 MHz. Electric polarization measurements for SnSrO3 and SnBaO3 were determined through curves of polarization as a function of applied electric field, which reveal the ferroelectric character of the material. From the saturation polarization the dielectric constants of materials were calculated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 407, Issue 16, 15 August 2012, Pages 3089-3092
Journal: Physica B: Condensed Matter - Volume 407, Issue 16, 15 August 2012, Pages 3089-3092
نویسندگان
J. Cuervo Farfán, J.J. Olaya, E. Vera López, D.A. LandÃnez Téllez, J. Roa-Rojas,