Remarkable enhancement in hybrid improper ferroelectricity of Ca3Ti2O7 ceramics by a simple sol-gel process
Sign Up to like & getrecommendations! Published in 2020 at "Materials Letters"
DOI: 10.1016/j.matlet.2020.128447
Abstract: Abstract Ca3Ti2O7 with Ruddlesden-Popper structure is a typical hybrid improper ferroelectric with large polarization. But the room-temperature ferroelectricity of Ca3Ti2O7 ceramics prepared by a solid-state method is not good enough. In this work, Ca3Ti2O7 ceramics… read more here.
Keywords: improper ferroelectricity; ferroelectricity ca3ti2o7; ferroelectricity; ca3ti2o7 ceramics ... See more keywords
Crystal structural evolution and hybrid improper ferroelectricity in Ruddlesden-Popper Ca3-xSrxTi2O7 ceramics
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Physics"
DOI: 10.1063/1.5001956
Abstract: Hybrid improper ferroelectricity (HIF) has been proposed as a candidate approach to create room-temperature multiferroic materials with an intrinsic electric-field controlled magnetism effect, and HIFs in bi-layered Ruddlesden-Popper Ca3-xSrxTi2O7 ceramics have been confirmed in the… read more here.
Keywords: ruddlesden popper; improper ferroelectricity; ca3 xsrxti2o7; hybrid improper ... See more keywords
Exchange bias effect in hybrid improper ferroelectricity Ca2.94Na0.06Mn2O7
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DOI: 10.1063/1.5003877
Abstract: The hybrid improper ferroelectricity Ca3Mn2O7 (CMO) has been a subject of remarkable interest due to potential multiferroicity. In this paper we synthesized CMO and Ca2.94Na0.06Mn2O7 (CNMO) ceramics and investigated their structural and magnetic properties. It… read more here.
Keywords: improper ferroelectricity; exchange bias; ca2 94na0; 94na0 06mn2o7 ... See more keywords
Structural transitions in hybrid improper ferroelectric C a 3 T i 2 O 7 tuned by site-selective isovalent substitutions: A first-principles study
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.97.184105
Abstract: Ca$_3$Ti$_2$O$_7$ is an experimentally confirmed hybrid improper ferroelectric material, in which the electric polarization is induced by a combination of the coherent TiO$_6$ octahedral rotation and tilting. In this work, we investigate the tuning of… read more here.
Keywords: improper ferroelectric; site selective; polarization; hybrid improper ... See more keywords
Nature of the structural symmetries associated with hybrid improper ferroelectricity in Ca3X2O7(X=Mnand Ti)
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.224105
Abstract: In hybrid improper ferroelectric systems, polarization arises from the onset of successive nonpolar lattice modes. In this work, measurements and modeling were performed to determine the spatial symmetries of the phases involved in the transitions… read more here.
Keywords: ferroelectricity; symmetries associated; ca3x2o7; structural symmetries ... See more keywords