scholarly journals General Introduction to Ferroelectrics

2021 ◽  
Author(s):  
Muzaffar Iqbal Khan ◽  
Trilok Chandra Upadhyay
Keyword(s):  
Phase Transitions ◽  
Dielectric Properties ◽  
Optoelectronic Devices ◽  
Electric Polarization ◽  
Ferroelectric Materials ◽  
General Introduction ◽  
High Permittivity ◽  
Fundamental Properties ◽  
Pyroelectric Sensors ◽  
Ferroelectric Phase Transitions

In this chapter “General introduction to ferroelectrics” we contribute the basic idea of the fundamental properties of ferroelectrics. We focus on the following properties in the chapter such as basic introduction, classification, ferroelectric phase transitions, spontaneous polarization, local field, dielectric properties, polarizability, thermodynamics of ferroelectricity and applications of ferroelectrics. Ferroelectric materials are unusual dielectric which possesses reversible spontaneous electric polarization which can be reversed by application of stress or electric field which exhibit a range of properties. These properties are widely used in the today’s scientific and industrial technology. The large number of areas due to their peculiar and interesting properties such as high permittivity capacitors, ferroelectric non-volatile FeRAM memories, pyroelectric sensors, piezoelectric and transducers, electrooptic and optoelectronic devices, etc.

Microscopic Mechanism and Domain Formation in the Paraelectric to Ferroelectric Phase Transitions in BaTiO3

2007 ◽  
Vol 1034 ◽  
Author(s):  
Marek Pasciak ◽  
Stefano Leoni
Keyword(s):  
Phase Transitions ◽  
Domain Walls ◽  
Ferroelectric Phase ◽  
Domain Boundary ◽  
Ferroelectric Materials ◽  
Cubic Phase ◽  
Microscopic Mechanism ◽  
Microscopic Features ◽  
Dynamics Simulations ◽  
Ferroelectric Phase Transitions

AbstractA design approach to ferroelectric materials critically depends on an accurate description of the microscopic features associated with paraelectric-to-ferroelectric phase transitions. The fine structures of domains, domain walls, and domain boundary dynamics as well as a precise understanding of local atomic displacements can be accessed using adequate potential models based on ab initio calculations and advanced molecular dynamics simulations. For BaTiO3 a complex scenario of microscopic domains in the paraelectric (cubic) phase and in the ferroelectric (tetragonal) phase is obtained. Therein, the static and dynamic role of domain/antidomain features, as well as their dependence on Ti displacements around the <111> manifold is clearly emerging.

Dielectric properties and ferroelectric phase transitions in mixed Rbx(NH4)1-xHSeO4 crystals

1983 ◽  
Vol 76 (2) ◽  
pp. K155-K157 ◽  
Author(s):  
Z. Czapla ◽  
O. Czupiński ◽  
L. Sobczyk ◽  
J. Mróz ◽  
H. Pykacz
Keyword(s):  
Phase Transitions ◽  
Dielectric Properties ◽  
Ferroelectric Phase ◽  
Ferroelectric Phase Transitions

Dielectric Behaviour of BaTiO3-SrTiO3 Solid Solutions Fabricated by High-Energy Ball Milling

2014 ◽  
Vol 605 ◽  
pp. 63-66 ◽  
Author(s):  
Piotr Dulian ◽  
Wojciech Bąk ◽  
Krystyna Wieczoek-Ciurowa ◽  
Czesław Kajtoch
Keyword(s):  
Phase Transitions ◽  
Dielectric Properties ◽  
Solid Solutions ◽  
Mechanochemical Synthesis ◽  
Perovskite Structure ◽  
Ferroelectric Phase ◽  
High Energy ◽  
Electroceramic Material ◽  
Energy Ball ◽  
Ferroelectric Phase Transitions

This paper considers the mechanochemical synthesis of advanced electroceramic material with a perovskite structure as well as this method as an effective way for modifying the properties of BaTiO3by substitution of foreign ions. Dielectric properties mainly para-ferroelectric phase transitions in Ba1-xSrxTiO3solid solutions (0.0 x 0.6) are presented.

Dielectric properties and ferroelectric phase transitions in BaxSr1−xTiO3 solid solution

2005 ◽  
Vol 399 (1-2) ◽  
pp. 1-6 ◽  
Author(s):  
Helmi Abdelkefi ◽  
Hamadi Khemakhem ◽  
Gabriel Vélu ◽  
Jean Claude Carru ◽  
Régnault Von der Mühll
Keyword(s):  
Solid Solution ◽  
Phase Transitions ◽  
Dielectric Properties ◽  
Ferroelectric Phase ◽  
Ferroelectric Phase Transitions

scholarly journals Recent Advances and Challenges in Halide Perovskite Crystals in Optoelectronic Devices from Solar Cells to Other Applications

Crystals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 39
Author(s):  
Seunghyun Rhee ◽  
Kunsik An ◽  
Kyung-Tae Kang
Keyword(s):  
Solar Cells ◽  
Optoelectronic Devices ◽  
Charge Carrier Mobility ◽  
Light Emitting ◽  
Fundamental Properties ◽  
Perovskite Materials ◽  
Hybrid Perovskite ◽  
Band Position ◽  
Different Characteristics ◽  
High Charge Carrier Mobility

Organic-inorganic hybrid perovskite materials have attracted tremendous attention as a key material in various optoelectronic devices. Distinctive optoelectronic properties, such as a tunable energy band position, long carrier diffusion lengths, and high charge carrier mobility, have allowed rapid progress in various perovskite-based optoelectronic devices (solar cells, photodetectors, light emitting diodes (LEDs), and lasers). Interestingly, the developments of each field are based on different characteristics of perovskite materials which are suitable for their own applications. In this review, we provide the fundamental properties of perovskite materials and categorize the usages in various optoelectronic applications. In addition, the prerequisite factors for those applications are suggested to understand the recent progress of perovskite-based optoelectronic devices and the challenges that need to be solved for commercialization.

Phase Transitions and Dielectric Properties in Bi(Zn1/2Ti1/2)O3–(Na1-yLiy)NbO3Perovskite Solid Solutions

2009 ◽  
Vol 48 (3) ◽  
pp. 031401 ◽  
Author(s):  
Chien-Chih Huang ◽  
Naratip Vittayakorn ◽  
Anurak Prasatkhetragarn ◽  
Brady J. Gibbons ◽  
David P. Cann
Keyword(s):  
Phase Transitions ◽  
Dielectric Properties ◽  
Solid Solutions

Li and Nb codoping in dielectric properties and phase transitions of KTaO3: Reentrant dipolar glass and long-range dipole ordering

2001 ◽  
Vol 155 (1-4) ◽  
pp. 367-371
Author(s):  
V. Trepakov ◽  
M. Savinov ◽  
S. Kappahn ◽  
L. Jastrabik ◽  
P. Camagni ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Dielectric Properties ◽  
Long Range ◽  
Dipole Ordering
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