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Regional Powers and the Building of an East Asian Community
( Luong T. H. Dinh ) 한국EU학회 2005 Asia-Pacific Journal of EU Studies Vol.3 No.1
The author aims to contribute her views about the relationship between regional powers and the integration process in East Asia, arguing that the interests of powerful states would determine the nature, dynamics and directions of the East Asian Community-building process. The term ``regional powers`` used in the paper refers to China and Japan, the two Northeast Asian powerful states. The paper consists of three parts. From historical and theoretical perspectives, the paper discusses the concept of regionalism in East Asia and the idea of the East Asian Community that the regionalism-making process in East Asia is gearing to, highlighting the increasing role played by China and Japan. Next, the paper focuses on the analysis of changes in the perceptions held and policies pursued by China and Japan toward the building of the East Asian Community and regional integration at large. Lastly, based on the analysis, the paper envisions the future roles by China and Japan to the building of an East Asian Community.
Magnetic Properties of (FePt)100-xCux Thin Films
N. T. T. Van,N. H. Hai,N. H. Luong,V. V. Hiep,N. Chau 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.5
A series of (FePt)100-xCux (x = 0, 5, 8 and 11) thin films have been prepared by RF sputtering. The as-deposited films are nanocrystalline with fine particles. Upon annealing, the films transfer to the ordered fct FePt phase, which is hard magnetic. The influences of the Cu content, as well as the heat treatment conditions, on the magnetic properties of the films have been studied. Addition of 5 -- 8 at.% Cu lowers the optimum annealing temperature and improves the magnetic squareness and convexity of the hysteresis loop. Addition of a higher Cu content weakens the hard magnetic properties of the films. The dependence of the hard phase formation on the annealing conditions is investigated. A series of (FePt)100-xCux (x = 0, 5, 8 and 11) thin films have been prepared by RF sputtering. The as-deposited films are nanocrystalline with fine particles. Upon annealing, the films transfer to the ordered fct FePt phase, which is hard magnetic. The influences of the Cu content, as well as the heat treatment conditions, on the magnetic properties of the films have been studied. Addition of 5 -- 8 at.% Cu lowers the optimum annealing temperature and improves the magnetic squareness and convexity of the hysteresis loop. Addition of a higher Cu content weakens the hard magnetic properties of the films. The dependence of the hard phase formation on the annealing conditions is investigated.
Vo, T.S.,Surabhi, S.,Luong, C.H.,Yoon, S.G.,Lee, K.D.,Park, B.G.,Jeong, J.R. Elsevier 2015 Current Applied Physics Vol.15 No.7
In this study, we have systematically investigated a magnetic resonance absorption and tunability of absorption wavelength in isolated metal-insulator-metal (MIM) nanodot arrays with transmission geometry. The elemental electromagnetic resonances and their hybridizations are studied using 3-dimensional finite-difference time-domain (FDTD) calculation and resonance properties including the resonance peak tunability, magnetic permeability and quality (Q) factor are characterized with respect to the coupling strength. We have found the existence of electric and magnetic resonance mode in the MIM (Au/MgF<SUB>2</SUB>/Au) structure and the magnetic resonance has larger wavelength tunability than the electric resonance. The absorption cross section calculation revealed that absorption is the dominant extinction process at the magnetic resonance only. Magnetic permeability (μ) calculations for the various MIM parameters showed the maximum value of the imaginary part of μ is 16.1 with Q factor of 9.2 when the size of nanodot is 200 nm and the inter-dot distance is 300 nm. The presented calculations can be used to tune the response of the magnetic resonance absorption with a variable resonance wavelength and Q factor by using the simple MIM structures with transmission geometry.