Neutron-diffraction measurements on the P-T phase diagram of ammonium bromide

W. Press, J. Eckert, D. E. Cox, C. Rotter, W. Kamitakahara

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Abstract

The P-T phase diagram of ND4Br and NH4Br has been investigated by neutron-diffraction techniques. Although many of the features previously reported have been confirmed, a new high-pressure phase could not be found. Measurements of the hysteresis of the II-III transition as a function of pressure indicate that the transition is discontinuous at all pressures and that no tricritical point exists along this phase line. The lattice constant of ND4Br has been measured as a function of temperature by x-ray diffraction.

Original languageEnglish
Pages (from-to)1983-1988
Number of pages6
JournalPhysical Review B
Volume14
Issue number5
DOIs
StatePublished - 1976

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