The phase diagram of ammonium bromide (NH4Br) under high pressure

• During recent measurements of thermal conductivity using the transient hot-wire method, data were obtained for pressure-temperature coordinates corresponding to transitions amongst phases II, III and IV of NH4Br which extended reliable knowledge of the phase diagram to pressures of about 2 GPa. The previously suggested common reduced phase diagram for the ammonium halides was found to be a relatively poor approximation in connection with the II-IV phase boundary of NH4Br and NH4Cl at pressures of about 2 GPa. 

Subject headings

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Keyword

Thermal conductivity

high pressure

phase diagram

phase transitions

NH4Br

ammonium halides

NH4Cl

Publication and Content Type

ref (subject category)

art (subject category)