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Solid Solutions Based on Ferroelectric PbNb 2 ,O 6
Author(s) -
SUBBARAO E. C.,
HRIZO J.
Publication year - 1962
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1962.tb11051.x
Subject(s) - valency , solid solution , orthorhombic crystal system , ferroelectricity , curie temperature , crystallography , dielectric , materials science , ion , curie , type (biology) , analytical chemistry (journal) , chemistry , mineralogy , crystal structure , condensed matter physics , physics , ferromagnetism , metallurgy , philosophy , linguistics , optoelectronics , organic chemistry , chromatography , ecology , biology
An X‐ray and dielectric study of three series of PbNb 2 O 6 ‐type solid solutions was carried out. The PbNbZOs‐type phase was present up to the following limits: (1) (Pb 1−x Bi 4 / 3x )(Ti x Nb 2 ‐ x .)O 6 , ×= 0.2; (2) (Pb l ‐ x Bi 4 3 x )(Ti 2 Nb l —2) 2 0 6 , ×= 0.2; and (3) (Pb 1−x Bi 2 / 3x )Nb 2 O 6 ×= 0.3. Orthorhombic distortion b/a and Curie temperature decreased with increasing x. Bi 4/3 ‐Ti 2 0 6 was most effective in this respect and Bi 2 , 3 ‐Nb 2 O 6 had the least influence. The important role played by ions of different valency located on crystallographically equivalent sites is pointed out.