An A-Site Mixed-Ammonium Solid Solution Perovskite Series of [(NH2NH3)x(CH3NH3)1−x][Mn(HCOO)3] (x=1.00-0.67)

The A‐site mixed‐ammonium solid solutions of metal–organic perovskites [(NH2NH3)x(CH3NH3)1−x][Mn(HCOO)3] (x=1.00–0.67) exhibit para‐ to ferroelectric diffuse phase transitions with lowered transition temperatures from x=1.00 to 0.67. These properties are due to the decreased framework distortion and...

Full description

Saved in:
Bibliographic Details
Published in:Angewandte Chemie International Edition 2015-09, Vol.54 (38), p.11093-11096
Main Authors: Chen, Sa, Shang, Ran, Wang, Bing-Wu, Wang, Zhe-Ming, Gao, Song
Format: Article
Language:English
Subjects:
Dielectric constant
dielectric properties
Distortion
Ferroelectric materials
Ferroelectricity
manganese
metal-organic perovskites
Permittivity
Perovskites
Phase transformations
Phase transitions
Solid solutions
Transition temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The A‐site mixed‐ammonium solid solutions of metal–organic perovskites [(NH2NH3)x(CH3NH3)1−x][Mn(HCOO)3] (x=1.00–0.67) exhibit para‐ to ferroelectric diffuse phase transitions with lowered transition temperatures from x=1.00 to 0.67. These properties are due to the decreased framework distortion and polarization in their low temperature ferroelectric phases caused by the increased CH3NH3+ concentration. Mix and match: [(NH2NH3)x(CH3NH3)1−x][Mn(HCOO)3] (x=1.00–0.67), an A‐site solid solution series of metal–organic perovskites, shows para‐ to ferroelectric transitions, with the critical temperature and phase‐transition character modulated by the ammonium composition. Phase transitions are studied by variable‐temperature X‐ray crystallography and dielectric permittivity (ε′) measurements (plots shown are for different ammonium compositions).
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201504396