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Damped soft phonons and diffuse scattering in 40%Pb(Mg1/3Nb2/3)O-3-60%PbTiO3
(American Physical Society, 2006-02-13)
Using neutron elastic and inelastic scattering and high-energy x-ray diffraction, we present a comparison of 40% Pb(Mg1/3Nb2/3)O-3-60% PbTiO3 (PMN-60PT) with pure Pb(Mg1/3Nb2/3)O-3 (PMN) and PbTiO3 (PT). We measure the ...
Modeling bacteria fate and transport in watersheds to support TMDLs
(American Society of Agricultural and Biological Engineers, 2006)
Fecal contamination of surface waters is a critical water-quality issue, leading to human illnesses and deaths. Total Maximum Daily Loads (TMDLs), which set pollutant limits, are being developed to address fecal bacteria ...
Use of biological indicators in TMDL assessment and implementation
(American Society of Agricultural and Biological Engineers, 2006)
Most states in the U.S. have a general water quality standard intended to protect water from all potential pollutants not specifically named or identified in other standards. Biological indicators are used, in part, to ...
Buckling of multiwalled carbon nanotubes under axial compression
(American Physical Society, 2006-02-01)
Buckling of single-walled and multiwalled carbon nanotubes (SWNTs and MWNTs, respectively) due to axial compressive loads has been studied by molecular mechanics simulations, and results compared with those from the analysis ...
Low symmetry phase in Pb(Zr0.52Ti0.48)O-3 epitaxial thin films with enhanced ferroelectric properties
(AIP Publishing, 2006-12-01)
The authors report the structural and ferroelectric properties of Pb(Zr0.52Ti0.48)O-3 (PZT) epitaxial thin films grown on (001), (110), and (111) SrRuO3/SrTiO3 substrates by pulsed laser deposition. A monoclinic C (M-c) ...
Ground state monoclinic (M-b) phase in (110)(c) BiFeO3 epitaxial thin films
(AIP Publishing, 2006-11-01)
The lattice structure of (110)-oriented BiFeO3 epitaxial thin layers has been identified by synchrotron x-ray diffraction. By using (221) and (22 (1) over bar) peaks in the (HHL) zone, a ground state monoclinic M-b phase ...
Multiferroic epitaxial Pb(Fe1/2Nb1/2)O-3 thin films: A relaxor ferroelectric/weak ferromagnet with a variable structure
(AIP Publishing, 2006-09-01)
The authors report the structural, ferroelectric, and ferromagnetic properties of Pb(Fe1/2Nb1/2)O-3 epitaxial thin layers grown on (001), (110), and (111) SrTiO3 substrates by pulsed-laser deposition; films were of sufficient ...
Detection of pico-Tesla magnetic fields using magneto-electric sensors at room temperature
(AIP Publishing, 2006-02-01)
The measurement of low-frequency (10(-2)-10(3) Hz) minute magnetic field variations (10(-12) Tesla) at room temperature in a passive mode of operation would be critically enabling for deployable neurological signal interfacing ...
Resonant bending mode of Terfenol-D/steel/Pb(Zr,Ti)O-3 magnetoelectric laminate composites
(AIP Publishing, 2006-09-01)
Resonant bending-mode Tb1-xDyxFe2-y/elastic-steel/Pb(Zr,Ti)O-3 magnetoelectric (ME) laminate composites have been investigated. An elastic-steel layer with a relatively high Q(m) significantly increases the resonant ...
Giant magnetoelectric effect in Metglas/polyvinylidene-fluoride laminates
(AIP Publishing, 2006-08-01)
Here, the authors report thin (< 100 mu m) and flexible magnetoelectric (ME) composites consisting of Metglas (high-mu magnetostriction) and polyvinylidene-fluoride (piezopolymer) layers laminated together. Both unimorph ...