Controlled Atmosphere Thermal Treatment for Pyrochlore Phase Elimination of PMN-PT/CFO Prepared by Spark Plasma Sintering

Abstract:

Multiferroics are interesting materials which present more than one ferroic property and have a great potential for practical applications [,,]. In addition, the coupling of magnetic and electric properties, the magnetoelectric effect (ME), offers news possibilities to applications [2,]. The magnetoelectric effect can be observed in single-phase materials like LuFe₂O₄, BiFeO₃, etc. [1,] or in composites like PMN-PT/CFO, BaTiO₃/CoFe₂O₄, etc. The ME composites have advantages over single-phase materials. They are easier to fabricate, less expensive, and have a wider range of working temperatures than single-phase materials []. However, some parameters that enhance the ME response need to be optimized. These parameters are the composition, the microstructure (grain size, grain orientation) and sintering parameters [6]. Thus, this work attempts to create a synthesis protocol to prepare the ME composite PMN-PT/CFO by Spark Plasma Sintering (SPS) keeping the average grain size as small as possible.

• Periodical: Advanced Materials Research (Volume 975)
• Pages: 274-279
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.975.274
• Online since: July 2014
• Authors: Diego Seiti Fukano Viana*, José Antônio Eiras, William Junior Nascimento, Fabio Luiz Zabotto, Ducinei Garcia
• Keywords: Composite, Magnetoelectro Effect, Pyrochlore Phase, Spark Plasma Sintering (SPS)

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