메뉴 건너뛰기




Volumn 322, Issue 5901, 2008, Pages 566-570

Detection of first-order liquid/liquid phase transitions in yttrium oxide-aluminum oxide melts

Author keywords

[No Author keywords available]

Indexed keywords

ALUMINUM OXIDE; METAL OXIDE; UNCLASSIFIED DRUG; YTTRIUM OXIDE;

EID: 54949151884     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1160766     Document Type: Article
Times cited : (187)

References (37)
  • 2
    • 54949126076 scopus 로고    scopus 로고
    • P. W. Bridgeman, The Physics of High Pressure (G. W. Bell and Sons, London, 1949).
    • P. W. Bridgeman, The Physics of High Pressure (G. W. Bell and Sons, London, 1949).
  • 13
    • 54949113341 scopus 로고    scopus 로고
    • O. Mishima, Y. Suzuki, Nature 419, 599225503 (2002).
    • O. Mishima, Y. Suzuki, Nature 419, 599225503 (2002).
  • 22
    • 0034642491 scopus 로고    scopus 로고
    • Y. Katayama et al., Nature 403, 170 (2000).
    • (2000) Nature , vol.403 , pp. 170
    • Katayama, Y.1
  • 23
    • 7444229058 scopus 로고    scopus 로고
    • Y. Katayama et al., Science 306, 848 (2004).
    • (2004) Science , vol.306 , pp. 848
    • Katayama, Y.1
  • 34
    • 54949107894 scopus 로고    scopus 로고
    • The equation of motion for an unstable spherical pendulum is d2θ/dt2, Qsinθ, where θ is the angular displacement from vertical and Q, A(Δρ/ρ)g/a [where a is the radius (1.15 mm) and g is the acceleration due to gravity (9.8 ms-2, For the polyamorphic rotor model, Δρ/ρ is the density contrast between HDL and LDL components of the sphere and A is a constant that governs the moment of inertia and is approximately equal to the fraction of the sphere converted to LDL (∼1/3, The time for the sphere to flip through 180° is τ ≈ 6Q-1/2. From the video frames, τ, 600 ± 70 ms, giving Δρ/ρ, 0.031 ± 0.004. If the enthalpy associated with the HDL/LDL transition is emitted radiatively, dT/dt, εαST4-T04/C P, where ε is the
    • LL of the polyamorphic transition of 34 ± 8 kJ/mol.
  • 35
    • 54949099349 scopus 로고    scopus 로고
    • -1 measured in these in situ experiments. Also, Δρ/ρ > 0, which would not destabilize the rotor action (Fig. 2B and movies S1 and S2).
    • -1 measured in these in situ experiments. Also, Δρ/ρ > 0, which would not destabilize the rotor action (Fig. 2B and movies S1 and S2).
  • 36
    • 54949099712 scopus 로고    scopus 로고
    • The measured temperature rise at the top of the rotor, which we attribute to the LDL/HDL transition initiated in the nozzle, indicates substantial superheating. This is in excess of the upper spinodal limit shown in Fig. 2B and defined by the two-state model (9), in which case internal superheating might trigger the reverse endothermic LDL/HDL transition rather than external laser heating.
    • The measured temperature rise at the top of the rotor, which we attribute to the LDL/HDL transition initiated in the nozzle, indicates substantial superheating. This is in excess of the upper spinodal limit shown in Fig. 2B and defined by the two-state model (9), in which case internal superheating might trigger the reverse endothermic LDL/HDL transition rather than external laser heating.
  • 37
    • 54949135465 scopus 로고    scopus 로고
    • We thank W. Bras, P. McMillan, and P. Poole for very useful discussions; the Science Technology Facilities Council and staff at the Synchrotron Radiation Source for access to the SAXS/WAXS facilities on station 6.2; and the Advanced Photon Source for access to high-energy x-ray scattering facilities on 11-ID-C. We also acknowledge the support of the Higher Education Funding Council in Wales through the Centre for Advanced Functional Materials and Devices
    • We thank W. Bras, P. McMillan, and P. Poole for very useful discussions; the Science Technology Facilities Council and staff at the Synchrotron Radiation Source for access to the SAXS/WAXS facilities on station 6.2; and the Advanced Photon Source for access to high-energy x-ray scattering facilities on 11-ID-C. We also acknowledge the support of the Higher Education Funding Council in Wales through the Centre for Advanced Functional Materials and Devices.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.