korean english


Home > 게시판 > 세미나

아래와 같이 세미나를 개최하오니 많이 참석해 주시기 바랍니다. 아 래 제목: Multiferroics: Magnetism-driven Ferroelectricity 연사: Young Jai Choi, Rutgers University 일시: 2009년 6월 18일(목) 오후 3시 장소: Seminar room(31355) on the third floor 초록:Multiferroics, where magnetic order with broken inversion symmetry accompanies the occurrence of ferroelectric polarization, can show remarkable tunability of dielectric properties by applied magnetic fields, such as reversibly flipping of ferroelectric polarization or a drastic change of dielectric constant with fields. Among such materials, spinel CoCr2O¬4, exhibiting a conical-spiral spin order, is unique in that it exhibits spontaneous magnetization as well as electric polarization. I will present the detailed switching behavior of magnetoelectric domains, characterized by polarization, magnetization, and magnetic wave vector, under variation of temperature and applied magnetic fields. I will also discuss newly-discovered multiferroicity in a "collinear" chain magnet of Ca3(Co,Mn)2O6, where the ferroelectricity originates from the coexistence of the alternating order of magnetic ions with different charges and the collinear up-up-down-down spin order in the frustrated spin chain. As a summary, discussion for current efforts toward practical application of multiferroics will be briefly given.
번호 제목 날짜 조회 수
공지 2022학년도 1학기 콜로퀴움 일정 2022.01.10 1793
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 813301
588 <3/16> Inelastic X-ray Scattering: past, present, and the future 2011.03.10 81371
587 <2/14> An inverse voter model for co-evolutionary networks: stationary efficiency 2011.02.11 81164
586 <10/10> Spin transistor : Detection and manipulation of spin transport in semiconductor 2012.09.27 81012
585 <5/8>Recent trend of thin film battery 2009.05.06 80932
584 <4/11> 방사광 연 X선을 이용한 미시적 물성 연구 2008.04.07 80831
583 <2/15> Geometric distance-dependent percolations in networks on two-dimensional planes 2011.02.11 80802
582 <10/8 (월)>물리학과 특별세미나 개최 안내 2012.10.05 80590
581 <5/1> Entanglement and topological order in 1D and 2D systems 2013.04.18 80536
580 <5/28> The hunt for high energy neutrinos with IceCube - more evidence for their astrophysical origin 2014.05.22 80510
579 <5/23> Nanotechnology in Korea: Present Status and Perspective 2008.05.21 80392
578 <11/16> Study of carrier transport and charging effects in organic devices 2011.11.10 80349
577 <11/21> Cosmological viable scalar-tensor theories of gravity 2012.11.16 80277
576 <4/16>같은 곳을 바라보는 다른 시선 2010.04.09 80244
575 <2/16>Development of Micromegas detectors for neutron physics 2010.02.01 80190
574 <4/28> Generalised cosmological scaling solutions in braneworld and their duality properties 2006.04.24 80158
» <6/18> Multiferroics: Magnetism-driven Ferroelectricity 2009.05.27 80120
572 <10/15> Electric control of magnetic nanostructures via spin torque 2010.10.08 80115
571 <5/11> Hybrid Josephson Junctions of Various Nanostructures 2011.05.04 80038
570 <3/12> Nano Structure of wide Band Gap Semiconductors 2010.03.08 79942
569 <9/26> Organic Polymers as Nuclear Radiation Sensors 2012.09.20 79857