Article,

High pressure effects on the structural and vibrational properties of antiferromagnetic KFe(MoO4)(2)

, , , , , , , , , , , , and .
JOURNAL OF PHYSICS-CONDENSED MATTER, 17 (39): 6285-6300 (2005)
DOI: 10.1088/0953-8984/17/39/013

Abstract

The crystal structure of the paraelastic phase of KFe(MoO4)(2) at 360 K was reinvestigated and high pressure Raman scattering experiments were performed on this material. The Studies indicated that this molybdate crystallizes in the P3m1 structure above 312 K. At room temperature the structure is monoclinic and it transforms under pressure into P3m1, P3c1 and low symmetry phases at 0.25, 1.3 and 1.6 GPa, respectively. The phase transitions observed at 0.25 and 1.6 GPa are irreversible whereas the 1.3 GPa transition is reversible. The lattice dynamics calculations performed for the P3m1 phase allowed us to obtain an assignment …(more)

Tags

Users

  • @ppgfis_ufc_br

Comments and Reviews