Synthesis and characterization of novel multiferroic composites based on Y3Fe5O12@BaTiO3 and Y3Fe5O12@Pb(Zr,Ti)O3

SCHILEO, Giorgio, FETEIRA, Antonio, POSTOLACHE, Petronel, LILIANA, Mitoseriu and REICHMANN, Klaus (2013). Synthesis and characterization of novel multiferroic composites based on Y3Fe5O12@BaTiO3 and Y3Fe5O12@Pb(Zr,Ti)O3. In: Ceramic Interconnect and Ceramic Microsystems Technologies (CICMT 2013), Orlando, USA, 23-26th April 2013. (Unpublished)

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Multiferroic composites have attracted a great deal of attention in the last decade, thanks to their superior performances compared to single-phase multiferroics. Yttrium Iron Garnet (YIG) was employed for the first time in this study in combination with BaTiO3 and PZT to produce dense ceramics which exhibit both ferromagnetism and spontaneous polarization at room temperature. Both materials have been synthetized by tailored sol-gel methods and sintered by conventional sintering and SPS. Different approaches, i.e. the effect of different precursors and processing conditions, have been compared and the results analysed by different techniques, such as XRD, electron microscopy (SEM, TEM), Raman spectroscopy; the magnetic and dielectric properties were also investigated. Raman spectroscopy shows evidence for retaining of ferroelectricity in BT even if the average crystal structure appears to be pseudo-cubic from refinement of XRD data. The shape of magnetic hysteresis loops also reveals the presence of magnetic parasitic phases even below the detection limit of XRD.

Item Type: Conference or Workshop Item (Paper)
Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Structural Materials and Integrity Research Centre > Centre for Corrosion Technology
Depositing User: Antonio Feteira
Date Deposited: 15 Nov 2013 13:56
Last Modified: 18 Mar 2021 08:45

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