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Ferro electric crystals are classified into two main groups 1.Displacive Type 2.Order-Disorder Type Displacive: If in the Paraelectric state the atomic displacements or oscillations about a non polar site then after a displacive transition the oscillations are about a polar site. If the soft optical phonon mode can propagate in a crystal at the transition is displacive. it induces ionic crystal structures closely related to Perovskite and Ilmenite. Order-Disorder: If in the paraelectric phase the displacements are about some Double well or multi well configuration of sites then in an order- disorder transition the dispacements are about an ordered subset of these wells.
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Does sandstone have crystals?
sandstone has crystals, big ones not small ones
Are Crystals rare?
No, they are quite common. For example, both sugar and salt come as crystals.
Do crystals change shape?
Yes, they can "grow".
What is the answer to piezoelectricity is caused by pressing or squeezing?
CRYSTALS
What geometric pattern dosalt particles form?
crystals
What has the author V L Aksenov written?
V. L. Aksenov has written: 'Neutron scattering by ferroelectrics' -- subject(s): Diffraction, Ferroelectric crystals, Neutrons
Is lead zirconium titanate ferrous?
Not ferrous, but ferroelectric !
What is the meaning of Ferroelectric?
In physics the ferroelectric effect is an electrical phenomenon whereby certain materials may exhibit a spontaneous dipole moment, the direction of which can be switched between equivalent states by the application of an external electric field. Placing a ferroelectric material between two conductive plates creates a ferroelectric capacitor. Ferroelectric capacitors exhibit nonlinear properties and usually have very high dielectric constants. The fact that the internal electric dipoles can be forced to change their direction by the application of an external voltage gives rise to hysteresis in the "polarization vs voltage" property of the capacitor. In this case, polarization is defined as the total charge stored on the plates of the capacitor divided by the area of the plates. Hysteresis means memory and ferroelectric capacitors are used to make ferroelectric RAM for computers and RFID cards. Above retrieved from Answers.com Viper1
Iron is ferroelectric but copper is not why?
"ferrum" is the Latin word for iron.
Ferroelectric ram as both ram and rom?
only rom
What is ferroelectric substance?
A substance which contains iron(Fe) and is able to conduct electricity.
What has the author Rosemary M Dyer written?
Rosemary M Dyer has written: 'The classification of ambiguous ice particle shadowgraphs by consensus' -- subject(s): Ice crystals, Classification, Particle size determination
Why electrocaloric effect observed in ferroelectric polymers only?
Its not true that electrocaloric effect (ECE) is observed only in ferroelectric polymers. ECE can be found in any typical dielectric material. If polarization switches from one direction to the other upon application or withdrawl of electric filed, the temperature of the material changes. It happens both in organic as well as inorganic materials. It is found that the EC coefficent is high near ferroelectric phase transition temperature.
What has the author Todd C MacLeod written?
Todd C. MacLeod has written: 'Modeling of metal-ferroelectric-semiconductor field effect transistors' -- subject(s): Field effect transistors, Current density, Electric potential, Ferroelectric materials, Mathematical models, Hysteresis
What has the author Steven W Wood written?
Steven W. Wood has written: 'Ferroelectric memory design'
What has the author Ali Sheikholeslami written?
Ali Sheikholeslami has written: 'Circuit design and modeling of ferroelectric memories'
How can you measure the hysteresis loop of the ferroelectric materials and what is the name of the instruments used for the measurements of the hysteresis loop?
it is agm or vsm
