Browsing Scholarly Works, Materials Science and Engineering (MSE) by Title
Now showing items 364-377 of 377
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Vacuum response and gas leak detection in piezoelectrically driven sound-resonance cavity
(AIP Publishing, 2004-05-01)It has been found that a piezoelectrically driven sound-resonance cavity (PSRC) is quite sensitive to low-pressure changes: a change from ambient to vacuum (67 Pa) conditions results in a 89degrees phase shift and a -81% ... -
Void-mediated coherency-strain relaxation and impediment of cubic-to-hexagonal transformation in epitaxial metastable metal/semiconductor TiN/Al0.72Sc0.28N multilayers
(2017-08-17)Bulk metastable phases can be stabilized during thin-film growth by employing substrates with similar crystal structure and lattice parameter, albeit over a thickness range limited by coherency-strain relaxation. Expanding ... -
Volatile and nonvolatile magnetic easy-axis rotation in epitaxial ferromagnetic thin films on ferroelectric single crystal substrates
(AIP Publishing, 2013-09-01)We explored the relationship between phase transformation and magnetoelectric effect by depositing epitaxial CoFe2O4 films on < 110 > oriented Pb(Mg,Nb)O-3-PbTiO3 (PMN-PT) with three different PbTiO3 contents (PMN-28PT, ... -
Voltage gain effect in a ring-type magnetoelectric laminate
(AIP Publishing, 2004-05-01)It has been observed that a ring-type magnetoelectric laminate composite of circumferentially magnetized magnetostrictive Tb1-xDyxFe2 and circumferentially polarized piezoelectric Pb(Zr,Ti)O-3 layers has a large magnetoelectric ... -
Vortex magnetic field sensor based on ring-type magnetoelectric laminate
(AIP Publishing, 2004-09-01)It has been found that ring-type magnetoelectric laminate composites of circumferentially magnetized magnetostrictive TERFENOL-D and a circumferentially poled piezoelectric Pb(Zr,Ti)O-3 have high sensitivity to a vortex ... -
X-ray and neutron diffraction investigations of the structural phase transformation sequence under electric field in 0.7Pb(Mg1/3Nb2/3)-0.3PbTiO(3) crystal
(American Institute of Physics, 2004-08-01)The structural phase transformations of 0.7Pb(Mg1/3Nb2/3)O-3-0.3PbTiO(3) (PMN-30%PT) have been studied using x-ray diffraction (XRD) and neutron scattering as a function of temperature and electric field. We observe the ... -
X-ray diffraction study of the pressure-induced bcc-to-hcp phase transition in the highly magnetostrictive Fe0.81Ga0.19 alloy
(American Physical Society, 2013-11-07)High-pressure x-ray diffraction measurements were performed at room temperature on single crystals of the highly magnetostrictive alloy Fe0.81Ga0.19 (galfenol). This alloy has a bcc crystal structure at ambient pressure ... -
X‐ray diffraction analysis of concentration and residual stress gradients in nitrogen‐implanted niobium and molybdenum
(American Institute of Physics, 1991-06-15)Large biaxial residual strains are developed after a 5-at.% implantation of N into Nb and Mo. The results indicate that the dominant source of internal strain arises from N located in interstitial sites. For Nb implanted ... -
X‐ray diffraction approach to grain boundary and volume diffusion
(American Institute of Physics, 1973)A generalized two‐dimensional diffusionmodel has been developed which consists of an array of boundaries coupled to the free surface and to the substrate lattice. The model makes use of three nonlinear partial differential ... -
X‐ray diffraction from d spacing gradients along ion‐implanted zones
(American Institute of Physics, 1991-06-15)Three kinematic diffraction models are described for interpreting diffraction profiles from ion-implanted samples. Each deals with relatively large d spacing gradients. The first treats the full zone as coherent which ... -
X‐ray diffuse scattering from a nitrogen‐implanted niobium film
(American Institute of Physics, 1991-06-15)A 2500-angstrom niobium single-crystal film was deposited onto a sapphire substrate and subsequently implanted with nitrogen to an average concentration of 0.5 at. %. Synchrotron radiation was used to measure the difference ... -
An x‐ray study of diffusion in the Cu‐Ag system
(American Institute of Physics, 1976)The interdiffusion coefficients for both solid phases of the Ag‐Cu system have been determined from x‐ray diffraction and electron microprobe data. Specimens containing 3.2 μm of Ag on a (111) ‐oriented Cu crystal were ... -
Young's modulus and hysteretic losses of 0.7Pb(Mg1/3Nb2/3)O-3-0.3PbTiO(3): single versus polycrystalline forms
(American Institute of Physics, 2003-12-15)Young's modulus (Y) of 0.7Pb(Mg1/3Nb2/3)O-3-0.3PbTiO(3) has been investigated for polycrystals and single crystals oriented along <001>, <110>, and <111>. The value of Y-<001> and Y-<110> for single crystals was dramatically ... -
ZrO2 Thin-Film-Based Sapphire Fiber Temperature Sensor
(Optical Society of America, 2012-10-01)A submicrometer-thick zirconium dioxide film was deposited on the tip of a polished C-plane sapphire fiber to fabricate a temperature sensor that can work to an extended temperature range. Zirconium dioxide was selected ...
