Results 101 to 110 of about 191,244 (266)

Origin of dielectric relaxor behavior in PVDF-based copolymer and terpolymer films

open access: yesAIP Advances, 2018
Relaxor ferroelectrics exhibit frequency-dispersion of their dielectric permittivity peak as a function of temperature, the origin of which has been widely debated. Microscopic understanding of such behavior for polymeric ferroelectrics has presented new
Abhijit Pramanick   +8 more
doaj   +1 more source

Vortex ferroelectric domains

open access: yesJournal of Physics: Condensed Matter, 2008
We show experimental switching data on microscale capacitors of lead-zirconate-titanate (PZT), which reveal time-resolved domain behavior during switching on a 100-ns scale. For small circular capacitors, an unswitched domain remains in the center while complete switching is observed in square capacitors.
Gruverman, Alexei   +6 more
openaire   +4 more sources

Latest progress in Van der Waals ferroelectrics [PDF]

open access: yesMATEC Web of Conferences
2D ferroelectrics are regarded as promising materials across diversified aspects such as field-effect transistors (FETs), sensors, and more due to their properties of spontaneous polarization and large, tuneable bandgap.
Li Zhengze
doaj   +1 more source

Cryogenic Ferroelectric Behavior of Wurtzite Ferroelectrics [PDF]

open access: yesarXiv
This study presents the first experimental exploration into cryogenic ferroelectric behavior in wurtzite ferroelectrics. A breakdown field (EBD) to coercive field (EC) ratio of 1.8 is achieved even at 4 K, marking the lowest ferroelectric switching temperature reported for wurtzite ferroelectrics.
arxiv  

Geometric isotope effect of deuteration in a hydrogen-bonded host–guest crystal

open access: yesNature Communications, 2018
Deuterating a hydrogen bond can change the bond’s geometry, a phenomenon known as the geometric isotope effect (GIE). Here, the authors find that a hydrogen-bonded host–guest crystal, imidazolium hydrogen terephthalate, exhibits significant GIE on its ...
Chao Shi   +4 more
doaj   +1 more source

The nature of ferroelectricity under pressure [PDF]

open access: yesarXiv, 2006
Advances in first-principles computational approaches have, over the past fifteen years, made possible the investigation of physical properties of ferroelectric systems. In particular, such approaches have led to a microscopic understanding of the occurrence of ferroelectricity in perovskite oxides at ambient pressure.
arxiv  

Coexistence and interplay of two ferroelectric mechanisms in Zn1-xMgxO [PDF]

open access: yesarXiv
Ferroelectric materials promise exceptional attributes including low power dissipation, fast operational speeds, enhanced endurance, and superior retention to revolutionize information technology. However, the practical application of ferroelectric-semiconductor memory devices has been significantly challenged by the incompatibility of traditional ...
arxiv  

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