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Some Solid State Chemistry Aspects of Lead-Free Relaxor Ferroelectrics

✍ Scribed by J. Ravez; A. Simon


Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
306 KB
Volume
162
Category
Article
ISSN
0022-4596

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✦ Synopsis


IN HONOR OF PROFESSOR PAUL HAGENMULLER ON THE OCCASION OF HIS 80TH BIRTHDAY

Some solid state chemistry aspects are investigated in relaxor ferroelectrics of both perovskite and tetragonal tungsten bronze (TTB) structure. Various issues regarding composition, cationic charge, electronic con5guration, and structure are discussed. The relaxor behavior appears when two di4erent cations occupy the same crystallographic site. One of the cations in the octahedral site has to be ferroelectrically active. The relaxor e4ect is correlated to cationic distribution disorder in the same site, depending on composition and structure (perovskite or TTB).