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A short review of the study of thermal properties of the nanostructured ferroelectrics is given. An application of the modern calorimetric technique to a comparative study of phase transitions in the ferroelectric nanostructured materials (polycrystalline and epitaxial thin films, superstructures, ferroelectric heterostructures, substrate-induced ferroelectricity) is considered. [ABSTRACT FROM AUTHOR]

A number of novel protein amino acid-based single crystals were grown from aqueous solutions and their dielectric and pyroelectric properties were studied in a temperature range 140-340 K. It was shown that some of the crystals such as L-His· (H3P04)2, L-Tyr· HCl, L-Ala2H3PO3· H2O have pyroelectric figure-of-merit comparable to those of TGS. Anomalous dielectric properties of DL-Ser2· H2S04· H2O single crystals were observed in a temperature range 260-270 K revealing a first-order phase transition to an incommensurate phase. [ABSTRACT FROM AUTHOR]

Temperature dependences of pyroelectric, piezoelectric and dielectric responses of glycine phosphite crystals doped with glycine phosphate, in temperature interval 120–320 K, have been investigated. It was established that, unlike the undoped crystals, glycine phosphite crystals grown from the solution containing 25% of glycine phosphate reveal strongly asymmetric hysteresis loops below ferroelectric phase transition temperature T C , and considerable pyroelectric and piezoelectric activity was observed both below and above T C . Analysis of the shape of the hysteresis loops and temperature dependences of dielectric permittivity with and without external biasing points to the existence of internal bias field ∼⃒ 5 kV/cm along the twofold symmetry axis. Possible origin of the internal bias field is discussed. [ABSTRACT FROM AUTHOR]

Dielectric spectra of ceramic samples of Ca[sub 1-x]Pb[sub x]TiO[sub 3] (0 ≤ x ≤ 0.4) solid solutions were studied at frequencies between 10 Hz and 1 MHz in a temperature range of 4.2-300 K. A ferroelectric phase transition was observed at x=0.3 with transformation to a relaxor type behavior at x>0.3. The transition temperature T[sub c] follows a linear dependence T[sub c] ∞ (x-x[sub c]) with x[sub c]=0.28 contrary to a square-root dependence T[sub c]∞(x-x[sub c])[sup 1/2] predicted by the theory for incipient ferroelectrics. The critical concentration essentially exceeds the x[sub c] values for SrTiO[sub 3] and KTaO[sub 3] incipient ferroelectrics. [ABSTRACT FROM AUTHOR]

The article highlights the 8th Russia, Commonwealth of Independent States, Baltic and Japan Symposium on Ferroelectricity . It is attended by 131 scientists in various countries. The presentations covered important subjects in ferroelectricity, such as ferroelectric phase transitions, multiferroics, and piezoelectric materials. Most papers of the symposium are devoted to physical properties of ferroelectric materials in perovskite and perovskite-like structures.

Editorial. Focuses on the ferroelectrics journal containing papers presented at the seventh Russia-Cis-Baltic-Japan Symposium (RCBJSF-7) on ferroelectricity, held in Saint Petersburg, Russia on June 24-28, 2002. Institutes that organised the symposium; Key topics included in presentations at the convention; Schedule of the next symposium on ferroelectricity.