Pinched P-E hysteresis loops have been observed in filled tungsten bronze Ba_(4)Eu_(2)Ti_(4)Nb_(6)O_(30),indicating the presence of novel polarization mechanisms.We investigate the evolution of polar order in filled tungsten bronze Ba_(4)Eu_(2)Ti_(4)Nb_(6)O_(30),together with ...
Antiferroelectrics are of interest due to their high potential for energy storage. Here, we report the discovery of pinched, polarization-vs.-electric field (P–E) hysteresis loops in the lead-free tungsten bronze ferroelectrics Ba4Sm2Ti4Nb6O30and Ba4Eu2Ti4Nb6O30, while a broad, singleP–E...
Figure. Remanent polarization Pr of the samples recorded with hysteresis loops as a function of the electric fieled amplitude E. Vinylidene fluoride-trifluoroethylene copolymer films of molar ratio 70/30 with thickness of ab...
Fig.2P—Eendstrain—Ehysteresisloopsfor Pb0u7L02fzn}75T~mSmt16)03 3 期扬同青等:电场诱导PZST 陶瓷反饿I 乜铣电丰}『变323 验证这一结论.反向开关电场 FE—FE 的大小反映了电场作下所诱导铁电岳的稳 定科度,同佯也与样一离 相界的远近有关_51. ...
Ferroelectric hysteresis loops of P(VDF-TrFE) was measured as a function of drive voltage as shown in Fig. 1(d). This was performed on the test structure by using a Radiant Technology aPnredccisoioernciLvCe .vForltoamgeFVigc.o 1f(6d0) ,Vrewmenreanotbptaoilnaerdiz.aTtihoensePvr ...
(due to the resistive part of the measured current). To obtain a good cycle (I mean valuable datas), the currents due to the capacitance and resistance of the film must be extracted from the total current. Effectively, P-E cycles must be corrected in case of conductive samples (under ...
通常用电损耗角正切(tan δe )和磁损耗角正切(tan δm )来描述材料的损耗能力,如式(2)和式(3)所示,其值越大损耗能力越强,图4(e)、图4(f)为计算出的tan δe 和tan δm 曲线图。 Figure 3. Hysteresis loops of samples obtained by adding different active agents 图3. 添加不同活性剂得到的样品...
Copolymers of vinylidene fluoride (VDF) and trifluoroethylene (TrFE), with more than 50 mole percent VDF exhibit D-E hysteresis loops at room temperature w... GT Davis,MG Broadhurst,AJ Lovinger,... - 《Ferroelectrics》 被引量: 198发表: 1984年 Organic ferroelectric memory cells This invention...
piezoelectric strain, respectively. At a low sweep bias (Vsweep = ±3 V), both the phase and amplitude loops begin to show hysteresis. The sweep bias is then increased to ±5 V, and we obtain unsaturated local hysteresis loops. The full phase and amplitude loops with the ...
3.5 Ferroelectric properties The P–E hysteresis loops of (1 − x) KNLNS-xCBZS ceram- ics were measured at 10 Hz to investigate their ferroelec- tric properties, as illustrated in Fig. 10. The pure KNLNS is observed to exhibit a roundish hysteresis loop, indicating that a...