NDLI: Relaxor behavior of (1-x)Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_{3}$-xPbTiO$

Content Provider	Springer Nature Link
Author	Wu, NingNing Song, XueMei Hou, YuDong Zhu, ManKang Wang, Chao Yan, Hui
Copyright Year	2009
Abstract	In the present work, the phase transitions and relaxor behavior of (1-x)Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_{3}$-xPbTiO$_{3}$ (PMN-PT, x = 0.2–0.4) ferroelectric ceramics have been investigated by means of X-ray diffraction, dielectric spectroscopy, the P-E hysteresis loop measurements and Raman scattering techniques. Structural analysis revealed that with the increase of PbTiO$_{3}$ content, PMN-PT ceramics experienced a gradual phase transition process from rhombohedral to tetragonal. It is usually believed that such kinds of phase transitions resulted in the linear decrease of relaxation degree. Surprisingly, our analysis of the dielectric spectra revealed that the indicator of the degree of diffuseness y reached the maximum value near morphotropic phase boundary (MPB) (x = 0.32), then decreased with the further increase of PbTiO$_{3}$ content. The large dielectric relaxor feature near MPB may be attributed to the formation of ordered nanodomains, resulting from complex coexisting nanostructures. Further, the P-E hysteresis loop measurements and Raman analysis of the B-site cation order correlated well with the dielectric measurement results. It was found that the hysteresis loop squareness R $_{sq}$ received the minimum value while the inverse of the value of full wide of half maximum (FWHM) of A$_{1g}$ mode reached the maximum value at MPB composition, which showed similar trends to y.
Starting Page	1267
Ending Page	1274
Page Count	8
File Format	PDF
ISSN	10016538
Journal	Chinese Science Bulletin
Volume Number	54
Issue Number	7
e-ISSN	18619541
Language	English
Publisher	SP Science in China Press
Publisher Date	2009-04-02
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	PMN-PT ceramics relaxor behavior dielectric property the P-E hysteresis loop Raman spectroscopy Engineering Earth Sciences Chemistry/Food Science Physics Life Sciences Science
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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