Ferro/Antiferroelectricity and Phase Relations of Pb(Yb_<1/2>Nb_<1/2>)O_3-PbZrO_3 Solid Solution on PbZrO_3-Rich Side

概要

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In order to examine how the intermediate ferroelectric phase inherent to pure PbZrO_3 changes when PbZrO_3 is partially replaced by the antiferroelectric Pb(Yb_<1/2>Nb_<1/2>)O_3, dielectric constants, D-E hysteresis loops and a linear thermal expansion were measured as functions of both temperature and composition. In particular, regarding the successive phase transitions, paraelectric through ferroelectric to antiferroelectric, a thermal elongation was analyzed on the basis of the phenomenological theory presented by Uchino et at. [Jpn. J. Appl. Phys. 19 (1980) L425]. When PbZrO_3 was replaced by Pb(Yb_<1/2>Nb_<1/2>)O_3 within the amount of 2.5-15 mole%, the intermediate ferroelectric phase was shown to disappear. Finally, the phase relations of the solid solution Pb(Yb_<1/2>Nb_<1/2>)O_3-PbZrO_3 on the PbZrO_3-rich side were clarified.
社団法人応用物理学会の論文
1998-11-15