Journal
HIGH PRESSURE RESEARCH
Volume 32, Issue 1, Pages 23-29Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/08957959.2011.642990
Keywords
aluminium nitride; shock wave synthesis; rocksalt structure; high pressure
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The high pressure phase of aluminium nitride with rocksalt structure (rs) is a ceramic with high potential and a challenging material to investigate. The rs-AlN was synthesised and recovered by shock wave experiments using the flyer-plate method with multiple reflections at peak pressures between 15 and 43 GPa. Successful syntheses were carried out using AlN nanopowder with ambient pressure wurtzite structure (w-AlN) as starting material. The high pressure modification could, however, not be obtained when starting from submicron w-AlN. The recovery of rs-AlN is sensitive to the synthesis conditions as these influence the reconversion of rs-AlN to w-AlN.
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