The Raman spectra of NH4I at high pressures. The existence of a new phase in the ammonium halides |
| |
Authors: | AM Heyns KR Hirsch WB Holzapfel |
| |
Institution: | Max-Planck-Institut für Festkörperforschung, 7000 Stuttgart 80, Federal Republic of Germany |
| |
Abstract: | The Raman spectra of NH4I and ND4I show significant changes at higher pressures which can only be interpreted in terms of the existence of a new phase. This is not an intermediate phase occurring between phases II and IV, but is observed upon further compression of the ferro-ordered phase IV. Preliminary measurements show that the same phase transition occurs in NH4Br and NH4Cl, but at significantly higher pressures than the one in NH4I. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |