Publication
Article Metrics
Citations
Online attention
High-pressure structural evolution of the perovskite NH4MnCl3
DOI:
10.1088/1742-6596/215/1/012009
Authors:
Fernando
Aguado
(Universidad de Cantabria)
,
Fernando
Rodriguez
(Universidad de Cantabria)
,
Alistair
Lennie
(Diamond Light Source)
Co-authored by industrial partner:
No
Type:
Conference Paper
Conference:
Joint AIRAPT-22 & PHCJ-50
Peer Reviewed:
Yes
State:
Published (Approved)
Published:
March 2010
Abstract: The high-pressure evolution of the cubic perovskite NH4MnCl3 has been studied in the 0-6 GPa range by angle-dispersive x-ray diffraction. A structural phase transition has been found at low pressure (P-C= 0.4 GPa), in agreement with previous reports. The high-pressure phase has been refined in the tetragonal P4/mbm and orthorhombic Pbnm space groups. In either case, the structure can be described in terms of a tilted perovskite model (one tilt a(0)a(0)c(+) and two tilts a(+)b(-)b(-), respectively). The average tilting under pressure has been estimated from the lattice parameters. The P-V relation has been fitted by a Murnaghan Equation-of-State with K-0=29(2) GPa and K-0'=9(1).
Subject Areas:
Chemistry,
Materials
Facility: SRS Daresbury
Added On:
04/05/2010 16:22
Discipline Tags:
Technical Tags: