Publication
Broadband Dielectric Response in Hard and Soft PZT
Related publications (137)
Long-range symmetry breaking in embedded ferroelectrics
The characteristic functionality of ferroelectric materials is due to the symmetry of their crystalline structure. As such, ferroelectrics lend themselves to design approaches that manipulate this structural symmetry by introducing extrinsic strain. Using ...
2018Piezoelectric softening by Nb substitution in (Ba,Pb)ZrO
Nava Setter, Nicola Marzari, Dragan Damjanovic, Alberto Biancoli, David Bahati
Donor doping is commonly applied for softening of the piezoelectric and dielectric properties and facilitation of polarization switching in the ubiquitous Pb(Zr,Ti)O-3 [PZT] ceramics. The origin of the donor-dopant effects is not entirely clear. (Pb,Ba)ZrO ...
Wiley-Blackwell2017Identification of microscopic domain wall motion from temperature dependence of nonlinear dielectric response
It is known that the permittivity of ferroelectric polydomain films and single crystals in weak electric fields is strongly enhanced by the reversible movement of pinned domain walls. Two mechanisms of the movement exist: first, the bending of free segment ...
Amer Inst Physics2017Nonlinear dynamics of polar regions in paraelectric phase of (Ba1-x,Srx)TiO3 ceramics
The dynamic dielectric nonlinearity of barium strontium titanate (Ba1-x, Sr-x) TiO3 ceramics is investigated in their paraelectric phase. With the goal to contribute to the identification of the mechanisms that govern the dielectric nonlinearity in this fa ...
American Institute of Physics2017Ferroelectric domain continuity over grain boundaries
Dragan Damjanovic, Sukriti Mantri
Formation and mobility of domain walls in ferroelectric materials is responsible for many of their electrical and mechanical properties. Domain wall continuity across grain boundaries has been observed since the 1950's and is speculated to affect the grain ...
Elsevier2017Domain-wall conduction in ferroelectric BiFeO3 controlled by accumulation of charged defects
Mobile charged defects, accumulated in the domain-wall region to screen polarization charges, have been proposed as the origin of the electrical conductivity at domain walls in ferroelectric materials. Despite theoretical and experimental efforts, this sce ...
Nature Publishing Group2017Domain walls and defects in ferroelectric materials
The results of recent studies of domain walls and their interaction with defects in BaTiO3, Pb(Zr, Ti)O-3, and BiFeO3 are discussed. The studies reveal why donor- and acceptor-doped Pb(Zr, Ti)O-3 behave differently, what is the role of stationary charged d ...
Japan Society of Applied Physics2017Experimental and first-principles study of point defects, domain walls, and point-defect/domain-wall interactions in ferroelectric oxides
Ferroelectric oxides, such as lead zirconate titanate, have proved invaluable due to their excellent dielectric and piezoelectric properties. These classes of materials possess a large electric polarization below the Curie temperature. Regions of the cryst ...
EPFL2016Identification of defect distribution at ferroelectric domain walls from evolution of nonlinear dielectric response during the aging process
The motion of ferroelectric domain walls greatly contributes to the macroscopic dielectric and piezoelectric response of ferroelectric materials. The domain-wall motion through the ferroelectric material is, however, hindered by pinning on crystal defects, ...
Amer Physical Soc2016Neel-like domain walls in ferroelectric Pb(Zr,Ti)O-3 single crystals
Nava Setter, Tomas Sluka, Xiankui Wei
In contrast to the flexible rotation of magnetization direction in ferromagnets, the spontaneous polarization in ferroelectric materials is highly confined along the symmetry-allowed directions. Accordingly, chirality at ferroelectric domain walls was trea ...
Nature Publishing Group2016