کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1617545 1005689 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impedance and electric modulus analysis of Sm-modified Pb(Zr0.55Ti0.45)1−x/4O3 ceramics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Impedance and electric modulus analysis of Sm-modified Pb(Zr0.55Ti0.45)1−x/4O3 ceramics
چکیده انگلیسی

The polycrystalline ceramic samples of Pb1−xSmx(Zr0.55Ti0.45)1−x/4O3 (x = 0.00, 0.03, 0.06 and 0.09) were prepared by solid-state reaction technique at high temperature. Electric impedance (Z) and modulus (M) properties of the materials have been investigated within a wide range of temperature and frequency using complex impedance spectroscopy (CIS) technique. The complex impedance analysis has suggested the presence of mostly bulk resistive (grain) contributions in the materials. This bulk resistance is found to decrease with the increase in temperature. It indicates that the PSZT compounds exhibit a typical negative temperature coefficient of resistance (NTCR) behavior. The bulk contribution also exhibits an increasing trend with the increase in Sm3+ substitution to PZT. The complex modulus plots have confirmed the presence of grain (bulk) as well as grain boundary contributions in the materials. Both the complex impedance and modulus studies have suggested the presence of non-Debye type of relaxation in the materials.


► The PSZT ceramics with samarium were prepared by solid-state reaction technique.
► Bulk resistive contribution is found to decrease with the increase in temperature.
► PSZT ceramics exhibit NTCR type behavior usually found in semiconductors.
► Modulus plots show the presence of grain boundary along with bulk contributions.
► Impedance analysis has confirmed the presence of non-Debye type of relaxation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 509, Issue 22, 2 June 2011, Pages 6388–6394
نویسندگان
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