logo

korean english

게시판

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 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1056120
82 <1/28> Steps towards a non-relativistic AdS/CFT 2010.01.25 113758
81 <12/19> The BLG Theory in Light-Cone Superspace 2009.12.15 95012
80 <12/14> Breakup-Fusion and Knockout-Fusion Approach to Pre-Equilibrium Processes 2009.12.11 87527
79 <11/27> 중성자로 보는 작은 세상 속 큰 물리 2009.11.24 93263
78 <11/4>Plasmonic Properites of Metallic Nanostructures 2009.10.30 89956
77 <10/9> Smearing effect of membrane in plane-wave matrix model 2009.10.05 90960
76 <10/15> An Ideal Mean-Field Transition in a Driven Interacting System 2009.09.30 100848
75 <9/15> Resistance Switching Behavior of Epitaxially Grown NiO Thin Films 2009.09.07 141432
74 <8/11>Cooking up elements in the universe: Recent activities at HRIBF 2009.08.11 102070
73 <8/5>Brane superpotential via local Calabi-Yau spaces 2009.08.03 113142
72 <7/15> Experiment for Discoveries of Extrasolar Planets 2009.07.13 96232
71 <7/17> Atomic-scale polar oxide heterostructures: Growth and interfacial properties 2009.07.13 95590
70 <7/8> 신물질 고온초전도 초청강연 2009.06.26 84909
69 <6/17> Oscillating Fuzzy Sphere and M5/anti M5 configurations in ABJM model 2009.06.16 223574
68 <6/17> Molecular dynamics simulation to study amorphous structure of Ge2Sb2Te5 2009.06.03 84774
» <6/18> Multiferroics: Magnetism-driven Ferroelectricity 2009.05.27 108620
66 <5/11>Emergent Geometry as Quantum Gravity 2009.05.07 97911
65 <4/30> Updates on warped brane inflation 2009.04.21 117199
64 <4/27> BPS Vortices in Non-relativistic M2-brane Chern-Simons-matter Theory 2009.04.21 79015
63 <4/21> Experimental and Observational Astrophysics in the Infrared Wavebands 2009.04.17 119622