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RISS 인기검색어
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- 저자 : Bichurin, M.I. (검색결과 2 건)
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Magnetic resonance in bilayers of ferrite and functionally graded piezoelectric
Bichurin, M.I.,Petrov, R.V.,Petrov, V.M.,Saplev, A.F.,Tatarenko, A.S.,Kovalenko, D.V.,Melnichuk, D.G.,Yang, Su-Chul Elsevier 2017 Materials research bulletin Vol.96 No.3
<P><B>Abstract</B></P> <P>The particular purpose of this paper is theoretical modeling of magnetoelectric interactions at the ferromagnetic resonance in a layered structure of a ferrite and a piezoelectric with through-thickness graded polarization. We show that using the functionally graded piezoelectric with through-thickness variation of polarization can lead to an electric field induced broadening of ferromagnetic resonance line. As an example, we consider the laminate based on the yttrium iron garnet layer which is placed between two lead zirconate titanate layers with different poling direction. The maximal ferromagnetic resonance line broadening of 9.3Oe is obtained for the yttrium iron garnet to lead zirconate titanate layer thickness ratio of 1.7 at 9.3GHz for E equal to 10kV/cm.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ferromagnetic resonance in a ferrite-piezoelectric laminate is studied. </LI> <LI> An electric field induced FMR line broadening results from bending the sample. </LI> <LI> Ferrite layer between the two piezoelectric layers shows a large line broadening. </LI> </UL> </P>
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Hydrothermal synthesis of Bi-magnetic clusters for magnetoelectric composites
Jang, Seon-Min,Bichurin, M.I.,Yang, Su Chul Elsevier 2017 Materials research bulletin Vol.91 No.-
<P><B>Abstract</B></P> <P>Bi-magnetic materials possess unique magnetic characteristics combining hysteretic and built-in responses for self-bias magnetoelectric applications. In this work, two bi-magnetic clusters of Co/MFe<SUB>2</SUB>O<SUB>4</SUB> (M=Co and Zn) were hydrothermally synthesized for relative comparison of magnetic characteristics between ferromagnetic/ferrimagnetic (Co/CoFe<SUB>2</SUB>O<SUB>4</SUB>) and ferromagnetic/antiferromagnetic (Co/ZnFe<SUB>2</SUB>O<SUB>4</SUB>) complexes. Both bi-magnetic clusters were found to exhibit clear two-phases with random morphology and average cluster size of 110nm via physical complexation. Magnetic characteristics of the Co/CoFe<SUB>2</SUB>O<SUB>4</SUB> and Co/ZnFe<SUB>2</SUB>O<SUB>4</SUB> illustrated M–H slope of 0.02emu/gOe at <I>H</I> <SUB>dc</SUB> =0Oe with different remanent magnetization of 15.16emu/g and 0.22emu/g, respectively. As a magnetostritive phase in the magnetoelectric composites, two bi-magnetic clusters were formed with uniform cluster size for effective strain transfer between magnetostrictive-piezoelectric phases in the magnetoelectric system.</P> <P><B>Highlights</B></P> <P> <UL> <LI> This study focused on synthesis fo tailored bi-magnetic clusters to induce unique magnetic characteristics for self-bias magnetoelectric effect, which can provide an effective voltage over 50mV/cmOe under applying only AC magnetic field. </LI> <LI> The bi-magneic clusters were found to exhibit feasible magnetic properties with optimum cluster size for high magnetoelectric responses. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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