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Elastic and Acoustic Properties of Heavy Rare-Earth Metals

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TLDR
In this paper, ultrasonic properties like ultrasonic attenuation, sound velocities, acoustic coupling constants and thermal relaxation time have been studied in hexagonal structured metals Gadolinium, Terbium, Dysprosium (Dy), Holmium (Ho), Erbium (Er), and Thulium (Tm) along unique axis at room temperature
Abstract
In this paper, ultrasonic properties like ultrasonic attenuation, sound velocities, acoustic coupling constants and thermal relaxation time have been studied in hexagonal structured metals Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er) and Thulium (Tm) along unique axis at room temperature For the evaluations of ultrasonic properties, secondand thirdorder elastic constants have been computed also The peculiar behavior of these metals is found at 55° due their least thermal relaxation time and highest Debye average velocity Dy is more ductile, stable, perfect metal in comparison to other chosen metals due to its lowest value of attenuation So we predict that Dy is most suitable lanthanide metals for material science and engineering

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Book ChapterDOI

Ultrasonics: A Technique of Material Characterization

D.K. Pandey, +1 more
TL;DR: In this article, the authors classified materials into five categories: (a) metals and alloys, (b) semi-metals and semiconductors, (c) ceramics, glasses and glass-ceramics and (d) polymers, and (e) composite materials.
Journal ArticleDOI

Physical Properties of La1−xEuxPO4,0 ≤ x ≤ 1, Monazite‐Type Ceramics

TL;DR: In this article, the authors characterized the elastic properties of synthetic La1−xEuxPO4 monazite-type ceramics with 0 ≤ ≤ x ≤ 1.
Journal ArticleDOI

Computational Study of Ultrasonic Parameters of Hexagonal Close-Packed Transition Metals Fe, Co, and Ni

TL;DR: In this article, the second and third order elastic constants have been calculated for these metals using Lennard-Jones potential and the velocities VL and VS1 have minima and maxima respectively, with 45° with the unique axis of the crystal, while VS2 increases with the angle from unique axis.
Journal ArticleDOI

Acoustic wave propagation in Ni3R (R = Mo, Nb, Ta) compounds

TL;DR: In this paper, the second-order elastic constants using Lennard-Jones potential were computed for hexagonal closed packed structured Ni3Mo, Ni3Nb and Ni3Ta compounds.
Journal ArticleDOI

Effect of diameter and surface roughness on ultrasonic properties of GaAs nanowires

TL;DR: In this paper, the second and third order elastic constants of GaAs Nanowires (NWs) were calculated using the many-body interaction potential model and the velocities of ultrasonic waves at different orientations of propagation with unique axis were evaluated using the second-order elastic constants.
References
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Book

Phase Diagrams of the Elements

TL;DR: In this article, a summary of the pressure-temperature phase diagrams of the elements is presented, with graphs of the experimentally determined solid-solid phase boundaries and melting curves.
Journal ArticleDOI

Anomalous thermal expansion and magnetostriction of single-crystal dysprosium

TL;DR: In this article, the authors measured the magnetostriction and thermal expansion of single-crystal dysprosium metal in the paramagnetic, spiral, and ferromagnetic regions.
Journal ArticleDOI

Temperature dependence of thermal expansion and elastic constants of single crystals of ZrB2 and the suitability of ZrB2 as a substrate for GaN film

TL;DR: The elastic constants of ZrB2 are best characterized by the large value of the Young modulus (as high as 500 GPa) and small values of the Poisson ratio (0.13-0.15), indicating the high stiffness and hardness and the brittleness, respectively.
Journal ArticleDOI

Elastic stability and electronic structure of fcc Ti, Zr, and Hf: A first-principles study

TL;DR: In this paper, the structural stability and electronic structure of face-centered-cubic Ti, Zr, and Hf were studied by means of first-principles full-potential calculations.
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