15PT) single crystals were grown by a modified Bridgman method using IWR-1-endo supplier an allomeric 0.69Pb (Mg1/3Nb2/3)O-3-0.31PbTiO(3) single crystal as a seed. The as-grown 0.85PZN-0.15PT single crystals exhibit a tetragonal perovskite structure, which changes wholly into a cubic

structure between 190 and 215 degrees C confirmed by high-temperature x-ray diffraction measurement. 0.85PZN-0.15PT exhibits sharp dielectric-response peaks with slight dielectric frequency dispersion where the ferroelectric-paraelectric phase transition is nearly first order. Polarization induces an additional dielectric anomaly around 147 degrees C accompanied by the increase in Curie temperature (TC), the decrease in the value of dielectric maximum (epsilon(m)),and the enhancement of frequency dispersion, which can be assigned to the orientation of a ferroelectric domain or a macro-micro domain transition upon heating. The [001]-oriented 0.85PZN-0.15PT crystal planes exhibit excellent electrical properties, where remanent polarization P-r is 58.27 mu C/cm(2) Staurosporine clinical trial and piezoelectric constant d(33) is around 530-570 pC/N. Pyroelectric coefficient p, detectivity, and voltage responsivity figures of merit F-d and F-v of the 0.85PZN-0.15PT single crystals are 460 mu C/K m(2), 13.14 mu Pa-1/2, and 0.0302 m(2)/C, respectively, which increase greatly over the temperature range

measured. It is needed to improve the temperature stability and the voltage responsivity to meet the requirements of practical applications. 0.85PZN-0.15PT exhibits rather high transparency, with the ultraviolet cut-off edge near 380 nm indicating a low-lying electronic energy gap of similar to 3.16 eV. The infrared-absorption band occurs at 597 cm(-1), which can be attributed to the normal vibration of the [Zn1/3Nb2/3]/TiO3 group. (C) 2009 American Institute of Physics. [doi:10.1063/1.3238249]“
“Trigeminal neuralgia is uncommon in children. Idiopathic

Selleck CDK inhibitor type is less often seen than the secondary or symptomatic type. We report a 6-year-old girl with trigeminal neuralgia. Magnetic resonance imaging revealed an arterial loop at the exit of the trigeminal nerve.”
“A neutron study on two gilded bronze reliefs by Lorenzo Ghiberti is presented. The two reliefs, representing heads of prophets, come from the north and east doors of the Baptistery of Florence. The east door will be permanently located at the Museo dell’Opera di Santa Maria del Fiore museum at the end of its restoration, which is still in progress at the Metals Conservation Department of the Opificio delle Pietre Dure in Florence. The north door is kept in the original site, on the north facade of the Florentine Baptistery. Both reliefs exhibit critical aspects regarding their state of conservation in particular the stability of the gold layer on the bronze surface. Moreover the east head presents a remelting of which extension and composition are still unknown. The present work describes a non-destructive study of the subgilding area and bulk.