Metastable Melting Lines of Ice Phases at Low Temperature.

  • Mishima O.
    National Institute for Research in Inorganic Materials
  • Stanley H. E.
    Center for Polymer Studies and Department of Physics, Boston University

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  • Metastable Melting Lines of Ice Phases at Low Temperatures
  • Metastable Melting Lines of Ice Phases

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Abstract

When ice Ih in an emulsion is compressed below 250 K, it melts to supercooled liquid water, avoiding the formation of other crystal phases [1]. Here, we create emulsified high-pressure ices tinder high pressure and low temperature, and measure their temperature while these ices are decompressed at a constant rate at different temperatures. We detect metastable melting points of high-pressure ices, and identify their melting lines. We find what could be possibly two new ice phases, and discuss the relationship between decompression-induced melting and decompressioninduced amorphization.

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