For more than half a century perovskite ceramics represent the most important ferroic and multiferroic materials. From traditional PZTs to state of the art polar oxides have been investigated world- wide and applied in the overwhelming majority of electromechanical actuators as well as in a wide diversity of information storage devices. Indeed, during the last two decades, and due to the increasing importance of environmental protection for the high toxicity of lead and lead oxide, a great number of countries in all continents have legislated to replace this material, and this has dragged an intense research on lead-free piezoelectric ceramics. Some objectives of industrial transference of these materials have already been achieved, whereas some basic problems remain still unsolved.
Some current tendencies in the field are the investigation and application of lead free ferro- piezoelectric perovskites for informatics and actuators at micro- and nanoscales. The challenge of obtaining environmentally-friendly materials with competitive ferro- and piezoelectric performances has not been solved and several questions regarding the structure-properties relationship are currently open, under discussion.
Magnetoelectric multiferroics define another field of intense activity today. With already identified high application potentialities in fields informatics to medicine, mastering multiferroics looks not yet within easy reach. To date, single- phased multiferroics hide the manner they would surpass composite magnetoelectrics. Important groups at international scale work deciphering the physics of multiferroicty.
A high level of research activity is going on in several laboratories. Investigations put attention on experimental synthesis and properties measurements of new materials families, detailed characterization of crystallographic and electronic structures, theoretical search, modeling and prediction of optimized structures and properties with multiscale approaches. In parallel, a wide spectrum of technological applications is being been developed.
Superconducting materials has always been, and still is, a major branch of Materials Science, especially since the late 1980’s, when the so-called HTSC mixed oxide cuprates were discovered: critical temperatures up to 135 at room pressure and 165 K at high pressures, have since been achieved. About 20 years later, another surprising discovery was done with the pnictide type iron-based superconductors - Fe- bSC - that, in spite of their somewhat lower Tc values constitute another very interesting and populated family. Yet, last year, in a much praised experiment, Eremets et al, following the path of High Pressure resistivity measurements in Hydrogen and diverse hydrides, that have been suggested/predicted to be SC in the 1960’s, observed superconductivity in a sample of “H2S”, at Tc’s up to 203 K at a pressure of 1.5 million bars. Interestingly enough, D2S, shows a much lower Tc in the same conditions, likely indicating a BCS behaviour. The quest for Room Temperature superconductivity is then alive and well. The present symposium, expects to attract contributions concerning superconducting materials of all sorts and discussed them within the general subject of functional solids. This will surely allow us to explore their very interesting individual properties as well as the possible links between them.
Mixed oxide- anion (for example O/F, O/S/ or O/N) materials present a wide range of applications because of their basic functionalities. This forum covers fundamental properties based on solid state chemistry and physics to potential devices based on enhanced properties offered by such inorganic materials. This Mexico-MRS symposium aims to be the first Mexico- MRS meeting for this research topic on these material systems, which are not yet as widely known as mixed metal oxides.
The mixed oxide-anion materials landscape, often but not always perovskite-based, includes, for example their ferroelectric, ferromagnetic, semiconductive, thermoelectric, electroresistive, magnetoresistive properties, active materials such as conductive transparent high temperature stable electrodes, solid state electrolytes, ionic conductors, and photocatalytic, luminescent, and nonlinear optical materials. Device development activities would include state-of-the-art characterization and electronic properties improvement based on heterostructures, interface phenomena, electrode interactions and various device prototypes demonstrations.
The present proposed Mexico- MRS symposium aims creating a forum for discusson including physicists - experimentalists and theoreticians- , materials scientists, solid state chemists, analytical scientists and device design engineers. The symposium will induce and facilitate interdisciplinary discussions between these differing “core groups”, thereby stimulating collaboration and strengthening activities in the, widely expanding field of multifunctional solids of which Ferroics and Multiferroics, Superconductors and Mixed Oxide-Anion Solids are particularly important representatives. This meeting will for sure gather a significant number of high-level specialists that will find in the XXVI IMRC the optimal conditions for fruitful discussions and collaboration coordination.
- Single-phase and composite
- Lead-free Fundamentals and applications.
- Functional Crystal growth. Structure-properties characterization. Multiscale modelling of functional perovskites performance.
- Superconductors (theory and new materials): H2S and related, Iron Superconductors, Cuprates, Heavy fermions, etc. Correlations between MF and HTSC.
- Mixed oxide-anion (O/F, O/S or O/N materials): ferroelectric, ferroconductive, electroresistive, conductive transparent high temperature stable electrodes, solid state electrolytes, ionic conductors, and photocatalytic, luminescent, and nonlinear optical materials.
Marit Kaarpinen (Aalto Univ, Finland), María Elena Montero (CIMAV, Mexico), Nicola Spaldin (ETH Zürich, Switzerland), Amparo Fuertes (ICMB, Spain), Lorena Pardo (CSIC, Spain), Silvye Hebert (Laboratoire Crismat, CNRS, France), Pedro Prieto (Univ del Valle, Colombia), Tom Palstra (Univ of Groningen, The Netherlands), Andrea Cavalleri (MPSD, Germany), Roberto Escudero Derrat (UNAM, México), Regino Sáez Puche (Univ Complutense, Spain), Ivan Schuller (UCSD, USA), Emilio Morán Miguélez (Univ Complutense, Spain), Mikhail Eremets (Max Planck Institute für Chemie, Germany), Hideo Osono (Tokyo Institute of Technology, Japan), Raul Valenzuela (UNAM, Mexico), Casandra Hunt (Univ of California, Berkeley, USA), James Rondinelli (Northwestern Univ, USA), Danna Freedman (Northwestern Univ), Teresa Puig (CSIC, Spain), Leni Bascones (CSIC, Spain), Eiji Muromachi (NIMS, Japan), Masaki Azuma (Tokyo Institute of Technology, Japan), Paul Attfield (Univ of Edinburg, UK), Horacio Navarro Chavez (UNAM, México)