【摘 要】
：
Magnetization reversal in magnetic soft/hard bilayer systems is studied analytically by means of a variational method for magnetic energies in a continuum model
【机 构】
：
School of Physical Science and Technology, Yangzhou University, Yangzhou 225002
论文部分内容阅读
Magnetization reversal in magnetic soft/hard bilayer systems is studied analytically by means of a variational method for magnetic energies in a continuum model.The demagnetization curve is involved with nonlinear equations,and the solution is given implicitly in the form of Jacobi functions,which is valid for the total reversal process.Based on the non-trivial solutions,hysteresis loops,as well as the maximum energy product (BH)max versus thicknesses of soft/hard layers are obtained.With regard to (BH)max,improvement of the remanence competes with loss of coercive force.As a result,an optimum condition exists.For a given thickness of the hard layer,the optimum condition at which the largest (BH)max could be achieved is discussed,which is slightly different from previous works.
其他文献
Growth of high-quality single crystals is of great significance for research of condensed matter physics.The exploration of suitable growing conditions for sing
Ferroelectric Pb(Zr0.60Ti0.40)O3 thin films deposited on the niobium-doped SrTiO3 and Pt (111)/Ti/SiO2/Si substrates are fabricated by a sol-gel method.X-ray di
The one-dimensional interacting Kitaev chain at half fifling is studied.The symmetry of the Hamiltonian is examined by dual transformations,and various physical
For square-step quantum wells (SSQWs) and graded-step quantum wells (GSQWs),the nonlinear optical rectification (NOR),second harmonic generation (SHG) and third
目前太阳能“热管”式集热管的热效率都较低,从网上查到的一般在50%左右,生产厂商的宣传册中称其“热管”内的蒸汽温度达150℃以上,有的宣称达200℃.现以生产厂“热管”的宣
We propose a new CaN4 high pressure structure with the P21/m space group.The P21/m-CaN4 structure is constituted by the infinite armchair N-chain.The dynamical
We present an efficient three-dimensional coupled-mode model based on the Fourier synthesis technique.In principle,this model is a one-way model,and hence provi
The structural and magnetic properties of TM1a and TM13@Au32 clusters (TM=Mn,Co) are studied by firstprinciples calculations.We find that the Au32 cluster can t
本文对目前太阳能热水器领域所使用的保温材料应用状况作了分析,并介绍酚醛泡沫的应用优势,说明酚醛泡沫是一种太阳能热水器的理想保温材料。酚醛泡沫的应用能提高太阳能热水