Exploració per tema "Ferroelectricity"

Ara es mostren els items 1-20 de 40

    • 3d optical tomography of ferroelectric domains and domain walls 

      Gjaci, Reison (Universitat Politècnica de Catalunya, 2022-09-07)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Kungliga Tekniska högskolan
      In ferroelectric materials, the spontaneous polarization can be reversibly switched by an applied electric field, which makes them attractive for applications in non-volatile memories and other electro-active devices. ...

    • A phenomenological cohesive model of ferroelectric fatigue 

      Arias Vicente, Irene; Serebrinsky, S; Ortiz, Michael (2006-02)
      Article
      Accés obert
      We develop a phenomenological model of electro-mechanical ferroelectric fatigue based on a ferroelectric cohesive law that couples mechanical displacement and electric-potential discontinuity to mechanical tractions and ...

    • Dynamics of lattice disorder in perovskite materials, polarization nanoclusters and ferroelectric domain wall structures 

      Ocenásek, Jan; Minár, Ján; Alcalá Cabrelles, Jorge (Springer Nature, 2023-12-01)
      Article
      Accés obert
      The nexus between classic ferroelectricity and the structure of perovskite materials hinges on the concept of lattice disorder. Although the ordered perovskites display short-range displacements of the central cations ...

    • Enhanced ferroelectric and piezoelectric properties of BCT-BZT at the morphotropic phase boundary driven by the coexistence of phases with different symmetries 

      Dash, Smaranika; Pradhan, Dhiren K.; Kumari, Shalini; Ravikant, Ravikant; Rahaman, Mijanur; Cazorla Silva, Claudio; Kumar, Ashok; Brajesh, Kumar; Thomas, Reji; Rack, Philip D. (American Physical Society (APS), 2021-12-16)
      Article
      Accés obert
      The discovery of lead-free piezoelectric materials is crucial for future information and energy storage applications. Enhanced piezoelectric and other physical properties are commonly observed near the morphotropic phase ...

    • Enhancement of phase stability and optoelectronic performance of BiFeO3 thin films via cation co-substitution 

      Machado, Pamela; Caño, Ivan; Menendez Muniz, Cesar; Cazorla Silva, Claudio; Tan, Huan; Fina, Ignasi; Campoy Quiles, Marioano; Escudero, Carlos; Tallarida, Massimo; Coll, Mariona (Royal Society of Chemistry (RSC), 2021-01-07)
      Article
      Accés obert
      Compositional engineering of BiFeO3 can significantly boost its photovoltaic performance. Therefore, controlling site substitution and understanding how it affects the optical and electronic properties while achieving ...

    • Evidence for a dynamics crossover and its implication on the freezing temperature determination of relaxor ferroelectrics 

      Levit Valenzuela, Rafael; Ochoa Guerrero, Diego A.; Martínez García, Julio Cesar; García García, José Eduardo (Institute of Physics (IOP), 2019-09-27)
      Article
      Accés obert
      Relaxor ferroelectrics are characterized by a broadened and dispersive permittivity peak in their temperature-dependent dielectric spectra. Although several models have been proposed to explain the nature of these materials, ...

    • Exploring the electromechanical response and electric field-induced dielectric anomalies in PMN–PT electroceramics 

      Guerra, José de los Santos; Guarany, Cristiano A.; Lima, Elton C.; Borges de Araújo, Eudes; García García, José Eduardo (2021-06-23)
      Article
      Accés obert
      <jats:p> Electromechanical and dielectric properties of PMN–PT ferroelectric ceramics are investigated. In particular, dielectric response studies focus on the investigation of the influence of the DC applied electric field ...

    • Features of the structural and dielectric properties in BaTi1-xSnxO3 ferroelectric ceramics 

      Flávio Dornelas, Ramon Guilherme; Silva, Atair C.; García García, José Eduardo; Guerra, José de los Santos (2023-07-27)
      Article
      Accés restringit per política de l'editorial
      The demand to produce clean energy has been increasing over the last years due to the various climate changes, which are strongly afflicting the world. Therefore, it is necessary to implement new and alternative energy ...

    • Ferroelectric domain patterning with ultrafast light 

      Chen, Xin; Shvedov, Vladlen; Karpinski, Pawel; Koynov, Kaloian; Boes, A.; Mitchell, A.; Trull Silvestre, José Francisco; Cojocaru, Crina; Krolikowski, Wieslaw; Sheng, Yan (2016-12-01)
      Article
      Accés obert

    • Ferroelectrics as smart mechanical materials 

      Cordero Edwards, Kumara; Domingo Marimon, Neus; Abdollahi Hosnijeh, Amir; Sort Viñas, Jordi; Catalan, Gustau (2017-07-21)
      Article
      Accés obert
      The mechanical properties of materials are insensitive to space inversion, even when they are crystallographically asymmetric. In practice, this means that turning a piezoelectric crystal upside down or switching the ...

    • Giant thermal enhancement of the electric polarization in ferrimagnetic BiFe_{1-x}Co_{x}O_{3} solid solutions near room temperature 

      Menendez Muniz, Cesar; Cazorla Silva, Claudio (American Institute of Physics (AIP), 2020-09-11)
      Article
      Accés obert
      Thermal excitations typically reduce the electric polarization in ferroelectric materials. Here, we show by means of first-principles calculations that multiferroic BiFe 1 - x Co x O 3 solid solutions with 0.25 = x = 0.50 ...

    • Giant thermal transport tuning at a metal/ferroelectric interface 

      Zang, Yipeng; Di, Chen; Geng, Zhiming; Yan, Xuejun; Fu, Haohuan; Cazorla Silva, Claudio; Iñiguez Amigot, José Ignacio; Rurali, Riccardo; Nie, Yuefeng (2021-10-22)
      Article
      Accés obert
      Interfacial thermal transport plays a prominent role in the thermal management of nanoscale objects and is of fundamental importance for basic research and nanodevices. At metal/insulator interfaces, a configuration commonly ...

    • High stability of properties in morphotropic phase boundary Bi0.5Na0.5TiO3-BaTiO3 piezoceramics 

      Machado, Rodrigo; Ochoa Guerrero, Diego A.; dos Santos, Valdeci B.; Cerdeiras Montero, Elena; Mestres Vila, Lourdes; García García, José Eduardo (2016-11-15)
      Article
      Accés obert
      The (1-x)Bi0.5Na0.5TiO3–xBaTiO3 (BNT-xBT) system with composition at its morphotropic phase boundary (MPB) has received significant attention because of their attractive properties as lead-free piezoceramics. Although the ...

    • Insight into the dynamics of low temperature dielectric relaxation of ordinary perovskite ferroelectrics 

      Levit Valenzuela, Rafael; Ochoa Guerrero, Diego A.; Martínez García, Julio Cesar; García García, José Eduardo (2017-11-10)
      Article
      Accés obert
      The temperature dependence of the dielectric response of ordinary ferroelectric materials exhibits a frequency-independent anomalous peak as a manifestation of the ferroelectric to paraelectric phase transition. A second ...

    • La3+-induced (micro)structural changes and origin of the relaxor-like phase transition in ferroelectric lead barium niobate electroceramics 

      Venet, Michel; Zabotto, Fabio L.; García García, José Eduardo; Ochoa Guerrero, Diego A.; García, Ducinei; Eiras, Jose A.; M'Peko, Jean-Claude (Springer, 2014-04-01)
      Article
      Accés obert
      Lead barium niobate (Pb1-x Ba (x) Nb2O6, PBN) ferroelectric materials have been and are the subject of numerous studies in literature due to their potential for wide-ranging applications in the electronic industry. In this ...

    • Light-driven motion of charged domain walls in isolated ferroelectrics 

      Ordóñez Pimentel, Jonathan; Venet, Michel; Ochoa Guerrero, Diego A.; Rubio Marcos, Fernando; Fernández Lozano, José Francisco; García García, José Eduardo (American Physical Society (APS), 2022-12-26)
      Article
      Accés obert
      Light-induced ferroelectric domain wall motion turns out to be a promising phenomenon to de- velop new photo-controlled devices. However, the physical origin of this ligh-matter coupling when material is irradiated with ...

    • Light-induced strain and its correlation with the optical absorption at charged domain walls in polycrystalline ferroelectrics 

      Rubio Marcos, Fernando; Pamies, Paula; Del Campo Garcia, Angel Adolfo; Tiana, Jordi; Ordóñez Pimentel, Jonathan; Venet, Michel; Rojas Hernández, Rocio E.; Ochoa Guerrero, Diego A.; Fernández Lozano, José Francisco; García García, José Eduardo (Elsevier, 2023-06)
      Article
      Accés obert
      Photostrictive materials have a growing interest because of their great potential as light-driven actuators, among other optomechanical applications. In this context, the optical control of macroscopic strain in ferroelectrics ...

    • Magnetoelectric response in (1-x)PbZr0.65Ti0.35O3-xBaFe(12)O(19) multiferroic ceramic composites 

      Guerra, Jose D. S.; Betal, Soutik; Pal, Madhuparna; García García, José Eduardo; Oliveira, Adilson J. A; M'Peko, Jean-Claude; Hernandes, Antonio Carlos; Guo, Ruyan; Bhalla, Amar S. (2015-05-01)
      Article
      Accés obert
      The magnetoelectric (ME) properties of PbZr0.65Ti0.35O3-BaFe12O19 (PZT-BaM) multiferroic ceramic composites have been investigated in this work. These materials, containing both the ferroelectric PZT and ferrimagnetic BaM ...

    • Measurements and analysis of microwave nonlinearities in ferroelectric thin film transmission lines 

      Mateu Mateu, Jordi; Booth, James C.; Schima, S. A.; Collado Gómez, Juan Carlos; Seron, David; O'Callaghan Castellà, Juan Manuel (Institute of Electrical and Electronics Engineers, 2006)
      Text en actes de congrés
      Accés obert
      This work evaluates the microwave nonlinear properties of ferroelectric BaSrTiO thin films by measuring the frequency response of several coplanar transmission lines and interdigital capacitor structures as a function of ...

    • Modeling and simulation of conducting crack propagation in ferroelectric single crystals under purely electrical loading 

      Abdollahi Hosnijeh, Amir; Arias Vicente, Irene (2013)
      Text en actes de congrés
      Accés obert
      We present a phase-field model of fracture in ferroelectric single crystals for the simulation of conducting crack propagation under purely electrical loading. This is done by introducing the electrical enthalpy of a diffuse ...