Preparation and magnetoelectric properties of NiFe2O4–PZT composites obtained in-situ by gel-combustion method |
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| Authors: | Cristina Elena Ciomaga Mirela Airimioaei Valentin Nica Luminita M. Hrib Ovidiu F. Caltun Alexandra R. Iordan Carmen Galassi Liliana Mitoseriu Mircea N. Palamaru |
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| Affiliation: | 1. Faculty of Physics, Al. I. Cuza University, Iasi 700506, Romania;2. Faculty of Chemistry, Al. I. Cuza University, Iasi 700506, Romania;3. CNR-ISTEC, Via Granarolo no. 64, I-48018, Faenza, Italy;1. Department of Physics, Manonmaniam Sundaranar University, Tirunelveli 627012, India;2. Condensed Matter Physics, Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India;3. Materials Physics Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India;4. UGC – DAE CSR, Kalpakkam Node, Kokilamedu 603104, India;1. Department of Applied Physics, Delhi Technological University (Formerly Delhi College of Engineering), Bawana Road, Delhi, 110042, India;2. Department of Applied Science, A.I.A.C.T.R. Geeta Colony, Delhi, 110031, India;1. Smart Materials Research Laboratory, Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247667, India;2. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India;1. Dielectrics, Ferroelectrics & Multiferroics Group, Department of Physics, “Al. I. Cuza” University of Iasi, Blv. Carol I, nr.11, 700506, Iasi, Romania;2. Interdisciplinary Research Department – Field Science (RAMTECH), “Al. I. Cuza” University of Iasi, Blv. Carol I, nr.11, 700506, Iasi, Romania;3. Faculty of Chemistry, “Al. I. Cuza” University of Iasi, 700506, Iasi, Romania |
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| Abstract: | Magnetoelectric composites of xNiFe2O4–(1 ? x)Pb(Zr,Ti)O3 with x = 2, 5, 10, 20, 30% were prepared by citrate–nitrate combustion using PZT-based template powders. In order to ensure a better connectivity of dissimilar phases, we have used chemical methods for preparation in situ composites, followed by adequate sintering procedure. The structural, microstructural and functional properties of di-phase magnetoelectric composites of NiFe2O4–PZT are reported. The XRD analysis is demonstrating the synthesis of pure ferrite phase directly on the ferroelectric templates. An excellent mixing was obtained in the composite powders, as proved by a detailed SEM analysis.The magnetic and dielectric behaviors of the ceramic composites vary with the ratio of the two phases. The dielectric behavior is greatly influenced by the magnetic phase. The magnetoelectric (ME) coefficient was measured as a function of applied DC magnetic field. The maximum ME coefficient (dE/dH) varies from 0.0011 mV/(cm Oe) to 0.5 mV/(cm Oe) with increasing of NF addition. |
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