In situ preparation of CoFe2O4–Pb(ZrTi)O3 multiferroic composites by gel-combustion technique |
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| Authors: | AR Iordan M Airimioaiei MN Palamaru C Galassi AV Sandu CE Ciomaga F Prihor L Mitoseriu A Ianculescu |
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| Affiliation: | 1. Faculty of Chemistry, Al. I. Cuza University, Iasi 700506, Romania;2. ISTEC-CNR, Via Granarolo no. 64, I-48018 Faenza, Italy;3. Romanian Inventors Forum, Iasi 700089, Romania;4. Faculty of Physics, Al. I. Cuza University, Iasi 700506, Romania;5. Faculty of Applied Chemistry and Materials Science, Polytechnics University of Bucharest, Gh. Polizu 1-7, Romania;1. CEITEC – Central European Institute of Technology, Brno University of Technology, 616 00 Brno, Czech Republic;2. Institute of Materials Science and Engineering, Brno University of Technology, 616 69 Brno, Czech Republic;1. CEITEC - Central European Institute of Technology, Brno University of Technology, 616 00 Brno, Czech Republic;2. Institute of Materials Science and Engineering, Brno University of Technology, 616 69 Brno, Czech Republic;1. Department of Materials, Loughborough University, Loughborough LE11 3TU, UK;2. College of Engineering and Physical Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK;1. Department of Physics, Panjab University, Chandigarh 160014, India;2. Faculty of Electronic Engineering, Department of Telecommunications, University of Nis, Aleksandra, Medvedeva 14, 18000 Nis, Serbia;1. School of Physics and Materials Science, Shoolini University, Solan 173212, H.P., India;2. Department of Physics and Astrophysics, University of Delhi, Delhi 110007, India;1. Research Center on Advanced Materials and Technologies, Sciences Department, Alexandru Ioan Cuza University of Iasi, Blvd. Carol I, nr. 11, 700506 Iasi, Romania;2. Lab. of Microwave Spectroscopy, Radio Physics Department, Faculty of Physics, Vilnius University, Sauletekio av. 9, LT-10222 Vilnius, Lithuania;3. Research Department, Faculty of Physics, Alexandru Ioan Cuza University of Iasi, Blvd. Carol I, nr. 11, 700506 Iasi, Romania;4. Dielectrics, Ferroelectrics & Multiferroics Group, Faculty of Physics, Alexandru Ioan Cuza University of Iasi, Blvd. Carol I, nr. 11, 700506 Iasi, Romania |
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| Abstract: | Diphase magnetoelectric composites of CoFe2O4–Pb(ZrTi)O3 were prepared by citrate–nitrate combustion technique by using Pb(Zr,Ti)O3 template powders obtained by the mixed oxide method. Pure diphase powder composites with a good crystallinity were obtained after calcination. The composition and purity were maintained after sintering at temperature of 1100 °C/2 h, which ensured limited reactions at interfaces, while by sintering at 1250 °C/2 h, some small amounts of secondary phases identified as nonstoichiometric ZrO2?x resulted. The method allowed to produce diphase ceramics with homogeneous microstructures and a very good mixing of the two phases. The dielectric and magnetic investigation at room temperature confirmed the formation of composite ceramics with both dielectric and magnetic properties at room temperature, with permittivity and magnetization resulted as sum properties from the parent Pb(Zr,Ti)O3 and ferrite phases. |
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