Syntheses of relaxor/ferroelectric superlattice thin films Pb(Sc1∕2Nb1∕2)O3∕PbTiO3 and their dielectric properties

Syntheses of relaxor/ferroelectric superlattice thin films Pb(Sc1∕2Nb1∕2)O3∕PbTiO3 and their dielectric properties
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弛豫/铁电超晶格薄膜Pb(Sc1∕2Nb1∕2)O3∕PbTiO3的合成及其介电性能

DOI:
10.1063/1.2748091
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发表时间:
2007
期刊:
影响因子:
--
通讯作者:
J. Kiat
J. Kiat
中科院分区:
--
文献类型:
--
作者:
S. Asanuma;Y. Uesu;C. Malibert;J. Kiat

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采用脉冲激光沉积法合成了不同周期、不同组成比的Pb(Sc1∕2Nb1∕2)O3和PbTiO3 (PT)在致形相边界内外的超晶格(SL)薄膜。利用x射线衍射观测高阶SL反射,由此确定SL周期和相关长度。发现在较薄的薄膜中,SL结构的相干性延伸到整个薄膜。在1-104Hz频率范围内,平均PT含量为25%的SL的最大介电常数为1800,介电损耗为0.05。
Superlattice (SL) thin films with different periods and composition ratios of Pb(Sc1∕2Nb1∕2)O3 and PbTiO3 (PT), inside and outside the morphotropic phase boundary, are synthesized by a pulsed laser deposition method. High order SL reflections are observed by x-ray diffraction, from which the SL period and correlation length are determined. The coherency of the SL structure is found to extend over the whole film in the thinner films. A maximum dielectric constant of 1800 with a dielectric loss of 0.05 is obtained in the frequency range of 1–104Hz for a SL with average composition of 25% of PT.
通过单斜晶相观察 Pb(Sc1/2Nb1/2)O3-PbTiO3 薄膜中的偏振旋转
DOI: --
发表时间: 2006
期刊: Jap.J.Appl.Phys. 45(1)
影响因子: --
作者:
R.Haumont;C.Malibert;B.Dkhil;J.M.Kiat;F.Lemarreci;S.Asanuma;Y.Uesu
通讯作者: Y.Uesu