Pressure and temperature dependence of the structure of liquid arsenic and antimony

Chiba, Ayano; Tomomasa, Masatoshi; Higaki, Takuya; Hayakawa, Takazumi; Tsuji, Kazuhiko

doi:10.1088/1742-6596/98/1/012011

Cited by 11 publications

(13 citation statements)

References 8 publications

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“…The coordination numbers found at the melting temperature for l-Bi were 8.0 in the first shell and 10.3 in the shoulder, in good agreement with previously published data [19,29,46]. The coordination numbers found for l-Sb were 6.6 for the first shell and 10.2 for the shoulder in good agreement with previously published data [13,27,44]. The coordination number in the metallic pnictides increases along the series from approximately 3 in As, through 6 in Sb [44] to 8 in Bi.…”

Section: Discussionsupporting

confidence: 91%

“…This observation is in distinction to the hump observed in l-Sb near the melting point. The position of the shoulder relative to that of the first peak is 1.41, also in agreement with the simple cubic-like interpretation [27,44]. The region of the shoulder in g(r) of l-Bi is shown in Figure 4.…”

Section: Results and Analysissupporting

confidence: 84%

“…A similar phenomenon can be observed in l-As under pressure. [27,44] (ii) Peak widths measured by FWHM display non-monotonous temperature dependence, as shown in Figure 6. In particular, the 1 st peak has a constant width up to approximately 1200K at which point it begins to increase rapidly.…”

Section: Discussionmentioning

confidence: 93%

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On the relation between the microscopic structure and the sound velocity anomaly in elemental melts of groups IV, V, and VI

Greenberg

Yahel

Caspi

et al. 2010

The Journal of Chemical Physics

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The sound velocity of some liquid elements of groups IV, V, and VI, as reported in the literature, displays anomalous features that set them apart from other liquid metals. In an effort to determine a possible common origin of these anomalies, extensive neutron diffraction measurements of liquid Bi and Sb were carried out over a wide temperature range. The structure factors of liquid Sb and Bi were determined as a function of temperature. The structure of the two molten metals was carefully analyzed with respect to peak locations, widths, and coordination numbers in their respective radial distribution function. The width of the peaks in the radial distribution functions was not found to increase and even decreased within a certain temperature range. This anomalous temperature dependence of the peak widths correlates with the anomalous temperature dependence of the sound velocity. This correlation may be accounted for by increased rigidity of the liquid structure with temperature. A phenomenological correlation between the peak width and the sound velocity is suggested for metallic melts and is found to agree with available data for normal and anomalous elemental liquids in groups IV-VI.

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Section: Discussionsupporting

confidence: 91%

Section: Results and Analysissupporting

confidence: 84%

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On the relation between the microscopic structure and the sound velocity anomaly in elemental melts of groups IV, V, and VI

Greenberg

Yahel

Caspi

et al. 2010

The Journal of Chemical Physics

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“…The radial distribution functions of liquid As, Sb and Bi modeled by the quasicrystalline model using four different symmetries: sc, bcc, fcc and A7. (a) -As (at 1 GPa)[48]; (b) -Sb[49]; (c) -Bi[16,49].…”

mentioning

confidence: 99%

“…Shell contributions to the radial distribution function in the vicinity of the first peak for: (a) -liquid As[48]; (b) -Sb[49]; (c) -Bi[16,49].…”

mentioning

confidence: 99%

Short range order in anomalous liquid metals

Shor¹,

Yahel²,

Makov³

2012

Journal of Non-Crystalline Solids

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Pressure-Driven Chemical Disorder in Glassy As₂S₃ up to 14.7 GPa, Postdensification Effects, and Applications in Materials Design

et al. 2019

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A small difference in energy between homopolar and heteropolar bonds and the glass-forming ability of pure chalcogens leads to unexpected trends in densification mechanisms of glassy chalcogenides compared to vitreous oxides. Using high-precision compressibility measurements and in situ high-energy X-ray diffraction up to 14.7 GPa, we show a new densification route in a canonical glass As2S3. After the first reversible elastic step with a maximum pressure of 1.3 GPa, characterized by a strong reduction of voids and cavities, a significant bonding or chemical disorder is developed under higher pressure, reaching a saturation of 30% in the population of As–As bonds above 8–9 GPa. The pressure-driven chemical disorder is accompanied by a remarkable structural relaxation and a strongly diminished optical gap and determines structural, vibrational, and optical properties under and after cold compression. The decompressed recovered glass conserves a dark color and exhibits two relaxation processes: (a) fast (a few days) and (b) slow (months/years at room temperature). The enhanced refractive index of the recovered glass is promising for optical applications with improved functionalities. A nearly permanent red shift in optical absorption after decompression can be used in high-impact-force optical sensors.

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Pressure and temperature dependence of the structure of liquid arsenic and antimony

Cited by 11 publications

References 8 publications

On the relation between the microscopic structure and the sound velocity anomaly in elemental melts of groups IV, V, and VI

On the relation between the microscopic structure and the sound velocity anomaly in elemental melts of groups IV, V, and VI

Short range order in anomalous liquid metals

Pressure-Driven Chemical Disorder in Glassy As₂S₃ up to 14.7 GPa, Postdensification Effects, and Applications in Materials Design

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Pressure and temperature dependence of the structure of liquid arsenic and antimony

Cited by 11 publications

References 8 publications

On the relation between the microscopic structure and the sound velocity anomaly in elemental melts of groups IV, V, and VI

On the relation between the microscopic structure and the sound velocity anomaly in elemental melts of groups IV, V, and VI

Short range order in anomalous liquid metals

Pressure-Driven Chemical Disorder in Glassy As2S3 up to 14.7 GPa, Postdensification Effects, and Applications in Materials Design

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Product

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Pressure-Driven Chemical Disorder in Glassy As₂S₃ up to 14.7 GPa, Postdensification Effects, and Applications in Materials Design