Cubic-to-rhombohedral transformation in boron nitride induced by laser heating: In situ Raman-spectroscopy studies

Academic Article

Abstract

  • In situ Raman-spectroscopy studies were carried out on Ar-ion-laser-heated cubic boron nitride (cBN). Phase identification and temperature measurements were performed on micron-size particles and a pressure-compacted free-standing thin film of cBN. In both cases, cBN was shown to transform to the rhombohedral phase (rBN) above 1795±80 K with characteristic Raman peaks at 790 and 1366 cm-1 at ambient conditions. The cBN-to-rBN transformation proceeds with a characteristic time of 1 s. The temperature variation of Raman modes of rBN were measured to 1800 K. © 1995 The American Physical Society.
  • Authors

    Digital Object Identifier (doi)

    Author List

  • Liu J; Vohra YK; Tarvin JT; Vagarali SS
  • Start Page

  • 8591
  • End Page

  • 8594
  • Volume

  • 51
  • Issue

  • 13