Abstract:
The perovskite relaxor ferroelectric lead magnesium niobate Pb(Mg
important material because of its high dielectric constant and correspondingly large
electrostrictive strains.
)
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Ferroelectric ceramics are widely used as capacitors, transducers and thermistors, etc
in an electronic industry.
Tolerance factors, piezoelectric, dielectric properties and Curie
temperature of relaxor
perovskite of
PMN lead based ceramics have been seen from the result of this thesis.
The mathematical theory of Gibes free energy is presented in Landau Ginzberge De
vonshire formalism.
Key words:
PMN, piezoelectric, ferroelectric, relaxor, dielectric constants of PMN and sponta
neous polarization.
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Nb
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