The Problem of Phase Transitions in PZT Based Solid Solutions, Pb(Mg 1/3 Nb 2/3 )O 3 , Pb(In 1/2 Nb 1/2 )O 3 and "Relaxor Ferroelectricity." 2. Analysis of Experimental Results and Phase Diagrams for Pb(Mg 1/3 Nb 2/3 )O 3 , Pb(B′ 1/2 B′′ 1/2 )O 3

In the present paper the phenomena predicted in [2] for substances with FE and AFE phases coexisting is experimentally shown for Pb(Mg 1/3 Nb 2/3 )O 3 and Pb(B′ 1/2 B′′ 1/2 )O 3 -type compounds. Special attention is paid to analysis of their phase diagrams. The influence of external factors on the properties of these substances is considered. It is shown that all peculiarities in the behaviour of the substances in question are described on the basis of phase transitions between FE and AFE states. [ABSTRACT FROM AUTHOR]