Dynamic polarization echoes in piezoelectric powders

Fossheim, K.; Kajimura, K.; Kazyaka, T. G.; Melcher, R. L.; Shiren, N. S.

doi:10.1103/physrevb.17.964

Cited by 59 publications

(41 citation statements)

References 47 publications

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“…28)). 59,60 The high order elastic constants are very important in studying the nonlinear elasticity, 61 thermal expansion (through gruneisen parameter), 62 temperature dependence of elastic constants, 62,63 harmonic generation, 60 phonon-phonon interactions, 64 photon-phonon interactions, 65 lattice defects, 66 phase transitions, 67 echo phenomena, 68 and strain soening, 69 and so on. 47) as the height of g-ZnS monolayer, this stiffness is equivalent to 137 GPa, which is comparable to the bulk modulus (around 100 GPa) of a metal, for example Zirconium.…”

Section: Elastic Constantsmentioning

confidence: 99%

Mechanical properties and stabilities of g-ZnS monolayers

et al. 2015

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We investigate the mechanical properties and stabilities of the planar graphene-like zinc sulfide (g-ZnS) monolayers under various large strains using electronic structure calculations. The g-ZnS has a low inplane stiffness, about 1/8 of that of graphene. The potential profiles and the stress-strain curves indicate that the free standing g-ZnS monolayers can sustain large tensile strains, up to 0.16, 0.22, and 0.19 for armchair, zigzag, and biaxial deformations, respectively. However, both the strength and flexibility are reduced compared to graphene-like zinc oxide monolayers. The third, fourth, and fifth order elastic constants are indispensable for accurate modeling of the mechanical properties under strains larger than 0.02, 0.04, and 0.08 respectively. The second order elastic constants, including in-plane stiffness, are predicted to monotonically increase with pressure, while the trend in the Poisson ratio is reversed. Our results imply that g-ZnS monolayers are mechanically stable under various large strains. The elastic limits provide a safe-guide for strain-engineering the g-ZnS based electronics.

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Section: Elastic Constantsmentioning

confidence: 99%

Mechanical properties and stabilities of g-ZnS monolayers

et al. 2015

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“…Our derivation is similar to previous derivations [38,45,47], except that here we explicitly deal with mechanical oscillators for arbitrary amplitudes. We will then sum the contribution of many single oscillators with different natural frequencies.…”

Section: Echoes From Anharmonicitymentioning

confidence: 92%

Echoes from anharmonic normal modes in model glasses

Burton

Nagel

2016

Phys. Rev. E

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Glasses display a wide array of nonlinear acoustic phenomena at temperatures T 1 K. This behavior has traditionally been explained by an ensemble of weakly-coupled, two-level tunneling states, a theory that is also used to describe the thermodynamic properties of glasses at low temperatures. One of the most striking acoustic signatures in this regime is the existence of phonon echoes, a feature that has been associated with two-level systems with the same formalism as spin echoes in NMR. Here we report the existence of distinctly different type of acoustic echo in classical models of glassy materials. Our simulations consist of finite-ranged, repulsive spheres and also particles with attractive forces using Lennard-Jones interactions. We show that these echoes are due to anharmonic, weakly-coupled vibrational modes, and perhaps provide an alternative explanation for the phonon echoes observed in glasses at low temperatures.

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“…The hole was detected in the electric impedance of the condenser filled with powders. The magic tee technique [2,3] was applied to detect a hole [5]. We used the gated amplifier (MATEC 5500 + 510A) to make a hole.…”

Section: Methodsmentioning

confidence: 99%

Phonon Hole Burning in some Kinds of Piezoelectric Powder

Tsuruoka

1996

J. Phys. IV France

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Dynamic polarization echoes in piezoelectric powders

Cited by 59 publications

References 47 publications

Mechanical properties and stabilities of g-ZnS monolayers

Mechanical properties and stabilities of g-ZnS monolayers

Echoes from anharmonic normal modes in model glasses

Phonon Hole Burning in some Kinds of Piezoelectric Powder

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