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Researcher: Sagar Madhukar Mane
Guide(s): Chandrakant Kolekar
Keywords: Lead free ferroelectric; 0.5BCT-0.5BZT; CNFO; microwave sintering; dielectric measurement; ferroelectric properties; magnetic properties; magnetoelectric properties; magnetocapacitance
University: Solapur University
Completed Date: 30-04-2017
Abstract: newline Multiferroic (magnetoelectric or magnetodielectric) materials are greatly focused by the scientific community through worldwide because of their intriguing fundamental physics and novel multifunctional device applications. Magnetoelectric or magnetodielectric materials are nothing but the coupling between the two materials having ferroelectric and ferromagnetic phase. Here, in ME or MD materials the electric polarization can be induced by means on application of magnetic field or vice-versa. Coupling between the piezoelectric effect of ferroelectric material and magnetostrictive effect of magnetic material are mainly responsible for the ME effect in the composites. Lead based material like; (PZT) is one of the most studied and widely used ferroelectric materials with its high ferroelectric and piezoelectric properties. But, toxicity of lead containing material hinders its use in many applications. Also, lead based materials are banned in many countries worldwide, therefore search of lead free material having compatible properties to those lead containing material is the big task for a researchers among worldwide. Amongst different lead-free piezoelectric materials such as BaTiO3, (BiNa)TiO3, (KNa)NbO3 and the solid solutions of (Ba0.7Ca0.3)TiO3-Ba(Zr0.2Ti0.8)O3 (BCT-BCT) are likely to be the most probable candidates for the replacement of lead based materials. newlineIn the present work, we have synthesized the lead free ferroelectric composite [x(Ba0.7Ca0.3)TiO3-(1-x)Ba(Zr0.2Ti0.8)O3] (BCT-BZT) where x = 0.15, 0.3, 0.4 and 0.5. On the other hand ferromagnetic phase Co0.9Ni0.1Fe2O4 (CNFO) is selected as a magnetostrictive material to make coupling with ferroelectric BCT-BZT. Here, microwave sintering technique is implemented for the complete formation of ferroelectric, ferromagnetic and magnetodielectric phases. Following ferroelectric, ferromagnetic and magnetodielectric systems are synthesized in bulk phase employing hydroxide co-precipitation method and sintered using microwave sintering technique at 1100 °C and 1200 °C.
Appears in Departments:Department of Physics

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01_title page.pdfAttached File51.73 kBAdobe PDFView/Open
02_certificates.pdf76.97 kBAdobe PDFView/Open
03_acknowlegdement.pdf120.1 kBAdobe PDFView/Open
04_contents.pdf127.17 kBAdobe PDFView/Open
05_abstract.pdf91.82 kBAdobe PDFView/Open
06_list of figure and tables.pdf165.86 kBAdobe PDFView/Open
07_chapter 1.pdf568.17 kBAdobe PDFView/Open
08_chapter 2.pdf500.35 kBAdobe PDFView/Open
09_ chapter 3.pdf735.25 kBAdobe PDFView/Open
10_chapter 4.pdf1.99 MBAdobe PDFView/Open
11_chapter 5.pdf1.51 MBAdobe PDFView/Open
12_chapter 6.pdf572.85 kBAdobe PDFView/Open
13_chapter 7.pdf157.31 kBAdobe PDFView/Open
14_references.pdf416.21 kBAdobe PDFView/Open
15_publications.pdf256.7 kBAdobe PDFView/Open

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