Results 211 to 220 of about 11,325 (265)

Optical Properties and Model of Relaxor Ferroelectrics

Ferroelectrics, 2003
Phenomenological approach to a relaxor theory is developed and some experi-mental results in the support of this theory are received. The optical absorption spectrum, luminescent emission and photoconductivity are investigated in the wide temperature region in PbMg 1/3 Nb 2/3 O 3 .
Mamin R., Migachev S., Nikitin S., Sadykov M., Zverev D.   +4 more
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Enhancement of dielectric and ferroelectric properties in ferroelectric superlattices

Solid State Communications, 2010
Abstract I studied theoretically the enhancement of remanent polarization and dielectric permittivity of interfacial-coupled ferroelectric superlattices based on the Landau–Ginzburg theory. Our model adopts the Landau–Khalatnikov equation to describe hysteresis behavior and takes the time-dependent space-charge-limited conductivity into account to ...
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Luminescence and Optical Properties of Relaxor Ferroelectrics

Ferroelectrics, 2005
The optical absorption spectrum, luminescence and photoconductivity on single crystals PbMg1/3Nb2/3O3 and on ceramics Pb0.91La0.09(Zr0.65Ti0.35)O 3 are investigated in the wide temperature range. The luminescence spectrum correlates with the photoconductivity spectrum.
Zverev D., Migachev S., Mamin R., Nikitin S., Sadykov M., Başaran E., Mikailov F.   +6 more
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Ferroelectric and nonlinear optical properties of ferroelectric-superionic KTP

Ferroelectrics, 1993
Abstract Pyroelectric and nonlinear optical properties of KTP crystals are discussed. The SHG, optical and pyroelectric characteristics of multidomain crystals before and after poling are described and compared to single domain crystals.
V. D. Antsigin, V. A. Gusev, V. N. Semenenko, A. M. Yurkin   +3 more
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Ferroelectric and dielectric properties of ferrite-ferroelectric ceramic composites

Journal of Applied Physics, 2013
Particulate composites of ferrite and ferroelectric phases with xNiFe2O4 (NF) and (1 − x)Pb0.988(Zr0.52Ti0.48)0.976Nb0.024O3 (where x = 2, 10, 20, 30, 50, 70, and 100 wt. %) were prepared in situ by sol-gel method. The presence of a diphase composition was confirmed by X-ray diffraction while the microstructure of the composites was studied by scanning
Ciomaga, Cristina Elena, Neagu, Alexandra Maria, Pop, Mihai Valentin, Airimioaei, Mirela, Tascu, Sorin, Schileo, Giorgio, Galassi, Carmen, Mitoseriu, Liliana   +15 more
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Ferroelectric and Pyroelectric Properties of Nano Graded Ferroelectric Films

Advanced Materials Research, 2011
In order to improve the properties of nano graded ferroelectric films (NGFF), the generalized Ginzburg-Landau-Denvonshire (GLD) theory is used to investigate the ferroelectric and pyroelectric properties of NGFF. A function is introduced to describe the local structure of this graded film.
Hui Chen, Tai Min Cheng
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Adjustable ferroelectric properties in paraelectric/ferroelectric/paraelectric trilayers

Journal of Physics D: Applied Physics, 2008
A trilayer paraelectric/ferroelectric/paraelectric system is studied within the framework of the Ginzburg–Landau–Devonshire theory in consideration of the elastic interactions between each layer. An analytic expression of the ferroelectric phase transition temperature for the ferroelectric layer is derived.
XiaoYan Lu, Biao Wang, Yue Zheng, ChenLiang Li   +3 more
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Ferroelectric Properties of Colemanite

Journal of Applied Physics, 1959
The ferroelectric properties of the calcium borate mineral colemanite are investigated in the ferroelectric and paraelectric temperature regions. It is shown that Devonshire's phenomenological theory may be applied successfully to account for the experimental measurements of spontaneous polarization and electrical susceptibility over a wide temperature
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Dielectric and ferroelectric properties of Nd3Fe5O12

Solid State Communications, 2020
Abstract Multiferroics have attracted research interest for decades due to their potential applications. Multiferroics are relatively scarce due to the mutual exclusivity between magnetic and ferroelectric properties. New room-temperature multiferroics are looking forward to be exploited. Room-temperature multiferroic properties have been observed in
Tingsong Zhang, Chenyang Zhang, Hongming Yuan, Mingze Xu   +3 more
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A COMPUTER MODEL OF THE FERROELECTRIC PROPERTIES OF MICROTUBULES

International Journal of Modern Physics B, 2004
The tubulin dimers of microtubules are arranged in a crystalline lattice which is wrapped to form a long cylinder. Two different arrangements of monomers within the lattice have been postulated: the A-lattice and the B-lattice. Previous studies have assumed that both lattice types are hexagonal with each dimer surrounded by six nearest-neighbors. Based
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