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Enhanced magnetoelectric coupling in Ti and Ce substituted lead free CFO-BCZT laminate composites
Sakthivel Dinesh Kumar,
Published in Elsevier Ltd
2018
Volume: 750
   
Pages: 392 - 400
Abstract
Lead-free multiferroic composites with enhanced magnetoelectric properties and sensitivity have potential for various multifunctional devices. The magnetoelectric behaviour of CoFe2O4-(Ba0.85Ca0.15) (Zr0.1Ti0.9)O3, (CFO-BCZT) and substituted CFO-BCZT laminate composites prepared by epoxy bonding are investigated in this study. Magnetostrictive CoFe2O4 (CFO) substituted with Ti (CTFO) resulted in a very high piezo-magnetic coefficient (q) of ∼290 × 10−9 Oe−1. Lead free piezoelectric (Ba0.85Ca0.15) (Zr0.1Ti0.9)O3 [BCZT] substituted with Ce4+ (BCZCT) showed improved piezoelectric coefficients of d33 ∼ 675 pC/N and g33 ∼13 mV m/N. Two new trilayer multiferroic laminates were developed with a (2-2) composite connectivity by combining the pure and substituted ferroic phases. Magnetostrictive, ferroelectric, piezoelectric and magnetoelectric properties of CFO-BCZT and CTFO-BCZCT laminate composites were measured and compared in here. CTFO-BCZCT composite exhibited a large magnetoelectric response with a high ME coefficient (αME) of ∼950 mV/cm.Oe and also showed an improved magnetoelectric sensitivity at lower magnetic fields, making it a potential lead-free material for magnetoelectric sensing applications. © 2018 Elsevier B.V.
About the journal
JournalData powered by TypesetJournal of Alloys and Compounds
PublisherData powered by TypesetElsevier Ltd
ISSN09258388
Open AccessNo
Concepts (22)
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    Binary alloys
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    Cerium
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    CERIUM COMPOUNDS
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    Composite materials
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    Composite micromechanics
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    Ferroelectric materials
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    Ferroelectricity
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    Iron compounds
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    Laminates
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    Magnetostriction
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    MAGNETOSTRICTIVE DEVICES
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    Piezoelectricity
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    Titanium
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    Lead-free piezoelectrics
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    Magnetoelectric
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    Magnetoelectric couplings
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    Magnetoelectric properties
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    MAGNETOELECTRIC RESPONSE
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    MULTIFERROIC COMPOSITES
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    Multiferroics
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    Piezoelectric coefficient
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    Laminated composites