| 1 | Stable dielectric response of low-loss aromatic polythiourea thin films on Pt/SiO_(2) substrate显示文摘We have investigated dielectric properties of aromatic polythiourea(ArPTU,a polar polymer containing high dipolar moments with very low defect levels)thin films that were developed on Pt/SiO_(2) substrate.The detected response is compared to the response of commercially available polymers,such as high density polyethylene(HDPE)and polypropylene(PP),which are at present used in foil capacitors.Stable values of the dielectric constantε'≈5(being twice higher than in HDPE and PP)over broad temperature and frequency ranges and dielectric losses as low as in commercial systems suggest ArPTU as a promising candidate for future use in a variety of applications. | A.Eršte L.Fulanović L.Čoga M.Lin Y.Thakur Q.M.Zhang V.Bobnar | 2016 | Journal of Advanced Dielectrics2016，6，1： | 1 |
| 2 | Stable dielectric response in lead-free relaxor K_(0.5)Na_(0.5)NbO_(3)-SrTiO_(3) thin films显示文摘K_(0.5)Na_(0.5)NbO_(3)-SrTiO_(3)(KNN-STO)thin films of different compositions were prepared by the chemical solution deposition method.While structural investigations confirmed the formation of perovskite solid solution in all developed films,dieletric experiments revealed a relaxor broad dispersive maximum in the sample with 15 mol%of STO,exhibiting for a thin film high ε′~330 at~210K.The history-dependent effects of this relaxor sample were compared to those of KNN STO ceramics and,furthermore,shown to be much weaker than in widely used lead-based ferroelectric and relaxor(Pb,L a)(Zr,Ti)O_(3) ceramics:While fatigue endurance results revealed a slight drop in polarization after 3 × 10^(5) switching cycles,the results of aging of the dielectric constant revealed no notable decrease in its values after 10^(6)s. | A.Eršte A.Kupec B.Kmet B.Malič V.Bobnar | 2014 | Journal of Advanced Dielectrics2014，4，2： | 0 |
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