Now showing items 141-146 of 146
Comparisons of polarization switching in "hard," "soft," and relaxor ferroelectrics
(American Institute of Physics, 2004-04-15)
The dynamics of polarization switching have been investigated over extremely broad time (10(-8)<t<10(2) s) and field ranges for hard, soft, and relaxor ferroelectrics based on aliovalent modified Pb(Zr1-xTix)O-3. The results ...
Sound-resonance hydrogen sensor
(AIP Publishing, 2003-06-01)
A hydrogen sensor is reported in which a small piezoelectric-sound-resonance-cavity (PSRC) is used as the sensing element. Detection utilizes sound resonance and acoustic property differences between H-2 and air as a sensing ...
Magnetic force microscopy investigation of domain structures in Fe-x at. % Ga single crystals (12 < x < 25)
(American Institute of Physics, 2005-07-15)
The domain structure of furnace-cooled (FC) and post-annealed (PA) Fe-x at. % Ga (x=12, 20, and 25) crystals has been investigated by magnetic force microscopy. For both FC and PA Fe-12 at. % Ga, the domains were found to ...
Role of coexisting tetragonal regions in the rhombohedral phase of Na0.5Bi0.5TiO3-xat.%BaTiO3 crystals on enhanced piezoelectric properties on approaching the morphotropic phase boundary
(AIP Publishing, 2012-01-01)
The ferroelectric domain and local structures of Na0.5Bi0.5TiO3-xat.%BaTiO3 (NBT-x%BT) crystals for x = 0, 4.5, and 5.5 have been investigated by transmission electron microscopy. The results show that the size of polar ...
Evidence of decoupled lattice distortion and ferroelectric polarization in the relaxor system PMN-xPT
(American Physical Society, 2003-12-30)
We report high q-resolution neutron scattering data on PMN-xPT single crystals with x=20% and 27%. No rhombohedral distortion occurs in the 20PT sample for temperatures as low as 50 K. On the other hand, the 27PT sample ...
Multimodal system for harvesting magnetic and mechanical energy
(AIP Publishing, 2008-09-01)
In this letter, we investigate a multimodal system for simultaneous energy harvesting from stray magnetic and mechanical energies by combining magnetoelectric and piezoelectric effects. The system consists of a cantilever ...