Browsing by Author "Greaves, G. N."

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  • Hennet, L.; Cristiglio, V.; Kozaily, J.; Pozdnyakova, I.; Fischer, H. E.; Bytchkov, A.; Drewitt, J. W. E.; Leydier, M.; Thiaudière, D.; Gruner, S.; Brassamin, S.; Zanghi, D.; Cuello, G. J.; Koza, M.; Magazù, S.; Greaves, G. N.; Price, D. L. (2011-05-30)
    Aerodynamic levitation is an effective way to suspend samples which can be heated with CO2 lasers. The advantages of this containerless technique are the simplicity and compactness of the device, making it possible to ...
  • Hennet, L.; Pozdnyakova, I.; Bytchkov, A.; Drewitt, J.; Kozaily, J.; Leydier, M.; Brassamin, S.; Zanghi, D.; Fischer, H. E.; Greaves, G. N.; Price, D. L. (2011-07-01)
    Using time resolved x-ray diffraction combined with aerodynamic levitation and CO2 laser heating, we have studied the structural evolution of the fragile glass-forming liquid CaAl2O4 during supercooling from the stable ...
  • Van, Q. V.; Marejus, O.; Hennet, L.; Greaves, G. N.; Wilding, Martin C. (2009-12-21)
    Small angle x-ray scattering (SAXS) has been measured in the wavevector range 0.01
  • Greaves, G. N.; Wilding, M. C.; Hennet, L.; Langstaff, D.; Kargl, F.; Benmore, C. J.; Weber, J. K. R. (2011-03-18)
    We welcome efforts made by Barnes et al to study liquid-liquid transitions (LLT) in supercooled Y2O3x-Al2O3(100-x) or AYx melts reported in a recent Letter [1]. The first order LLT in AY20, which we have identified in situ ...
  • Greaves, G. N.; Wilding, M. C.; Fearn, S.; Langstaff, D.; Kargl, F.; Cox, S.; Vu Van, Q.; Majérus, O.; Benmore, C. J.; Weber, R.; Martin, C. M.; Hennet, L. (2008-10-24)
    We combine small-angle x-ray scattering (SAXS) and wide-angle x-ray scattering (WAXS) with aerodynamic levitation techniques to study in situ phase transitions in the liquid state under contactless conditions. At very high ...
  • Greaves, G. N.; Wilding, M. C.; Fearn, S.; Langstaff, D.; Kargl, F.; Van, Q. Vu; Hennet, L.; Pozdnyakova, I.; Majérus, O.; Cernik, R. J.; Martin, C. (2008-12-31)
    Modern levitation furnaces are enabling melting and freezing of refractory materials like Al2O3 to be studied in depth with synchrotron radiation techniques. Whilst α-Al2O3 is a close packed Debye-like solid, liquid Al2O3 ...
  • Greaves, G. N.; Kargl, F.; Ward, D.; Holliman, P.; Meneau, F. (American Institute of Physics, 2009-01-29)
    In situ inelastic x-ray scattering (IXS) experiments have been used to probe heterogeneity and deformability in zeolte Y as this thermally collapses to a high density amorphous (HDA) aluminosilicate phase. The Landau-Placzek ...
  • Greaves, G. N. (Royal Society of Chemistry, 2007-11-01)
  • Winter, Rudolf; Smith, I. H.; Jones, Aled R.; Greaves, G. N. (2005)
    The glass-forming reactions between sodium carbonate (Na2CO3) and silica (SiO2) have been investigated by 23Na, 29Si, and 13C magic-angle spinning (MAS) NMR spectroscopy. The multinuclear MAS NMR approach identifies and ...
  • Colyer, L. M.; ap Gwynn, Iolo A.; Greaves, G. N.; Sapelkin, A.; Menau, F.; Wade, Stephen (2009-11-03)
    Low-density zeolites collapse to the rigid amorphous state at temperatures that are well below the melting points of crystals of the same composition but of conventional density. Here we show, by using a range of experimental ...
  • Greaves, G. N.; Catlow, C. R. A.; Derbyshire, G. E.; McMahon, M. I.; Nelmes, R. J.; Van der Lann, G. (2008-11-01)
    After over a quarter of a century, the doors of the world's first synchrotron radiation source have closed. Its contribution to materials science in the past and the future should not be underestimated.