Ultrasonic Attenuation in Quartz at Low Temperatures

Purdom, R. C.; Prohofsky, E. W.

doi:10.1103/physrevb.2.551

Cited by 18 publications

(5 citation statements)

References 8 publications

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“…Due to large size and high thermal stability of BMGs, detailed and accurate study of various properties over a wide temperature and pressure ranges becomes possible. The studies of the acoustic, elastic and thermal properties of metallic glasses can provide important information about the structural and vibrational characteristics [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Theoretical prediction of Grüneisen parameter for bulk metallic glasses

Pandey¹,

Pandey

Rahul

2011

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Theoretical prediction of Grüneisen parameter for bulk metallic glasses

Pandey¹,

Pandey

Rahul

2011

Journal of Alloys and Compounds

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“…Recently, glass forming systems with a larger threedimension size have been developed. [3][4][5][6][7][8][9] Due to the large size and high thermal stability of the bulk metallic glasses ͑BMGs͒, detailed and accurate studies of various properties in large temperature and pressure ͑p͒ range become possible. The ultrasonic method is a powerful tool for studying the elastic wave propagation of a solid, and providing important information about the structural and vibrational characteristics.…”

mentioning

confidence: 99%

Equation of state of bulk metallic glasses studied by an ultrasonic method

Wang

Wen

Wang

et al. 2001

Applied Physics Letters

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The acoustic velocities and their pressure dependence of various Zr- and Pd-based bulk metallic glasses (BMGs) have been measured by using a pulse echo overlap method. The elastic constants as well as their pressure dependence of the BMGs have been determined, and the equation of state of these BMGs was obtained and compared to that of other glasses and crystalline solids. The structural characteristic of the BMGs is discussed.

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“…The energy absorbed spectrum obtained is commonly used in crystalline alloys [7] to study the defects interaction and phase transformations. Thus, in bulk metallic glasses, this technique [8] can be of great interest in the study of the transition from the glassy to crystalline state [9], changes in the structural order [10] and vibrational characteristics which are quite difficult for other methods to access [6,11,12].…”

Section: Introductionmentioning

confidence: 99%

Study on Cu48Zr43Al9 and Cu54Zr40Al6 Amorphous Matrix Alloys by Mechanical Spectroscopy

Florêncio

Marques

Silva

et al. 2015

DDF

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Anelastic properties of Bulk Metallic Glasses (BMG) were studied by mechanical spectroscopy using a flexural vibration apparatus. BMG’s samples, with nominal composition Cu48Zr43Al9and Cu54Zr40Al6, were produced by skull push-pull casting technique in rectangular cavity cooper mold. In both samples, the differential scanning calorimeter patterns have evidenced the presence of amorphous structure, although the X-ray diffraction for Cu48Zr43Al9composition has shown a heterogeneous microstructure embedded in the amorphous matrix. Anelastic relaxation spectra were obtained using an acoustic elastometer system with vibration frequency in the kilohertz bandwidth, a heating rate of 1 K/min, vacuum greater than 10-5mBar in the temperature range of 300 K to 620 K. In the flexural apparatus, an acoustic elastometer system, the internal friction (energy loss) and the elastic modulus were obtained by free decay of vibrations and by the squared of the oscilation frequency, respectively. Internal friction spectra were not reproducible among the measurements, which may imply atomic rearrangement in the samples due to consecutive heating. Normalized elastic modulus data showed distinct behavior from the first to the other measurements evidencing irreversible microstructural alterations in the samples possibly associated with mechanical relaxation due to the motion of atoms or clusters in the glassy state.

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Ultrasonic Attenuation in Quartz at Low Temperatures

Cited by 18 publications

References 8 publications

Theoretical prediction of Grüneisen parameter for bulk metallic glasses

Theoretical prediction of Grüneisen parameter for bulk metallic glasses

Equation of state of bulk metallic glasses studied by an ultrasonic method

Study on Cu<sub>48</sub>Zr<sub>43</sub>Al<sub>9</sub> and Cu<sub>54</sub>Zr<sub>40</sub>Al<sub>6</sub> Amorphous Matrix Alloys by Mechanical Spectroscopy

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