Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 38, Pages 11093-11096Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201504396
Keywords
dielectric properties; manganese; metal-organic perovskites; phase transitions
Categories
Funding
- NSFC [21171010, 21290170, 21290171, 21321001]
- National Basic Research Program of China [2013CB933401]
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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.
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