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TEMPERATURE DEPENDENCE OF EFFECTIVE MAGNETIC ANISOTROPY OF Fe-Nb-B ALLOY H.H.Zhao1,K.Y.He1,H.C.Yang1,Z.Wang1,L.Z.Cheng1,Y.J.Zhang1 (1.Department of Materials Science and Engineering,Northeastern University,Shenyang 110004,China;2.Tianjin Institute of Technology,Tianjin 300191,China) Abstract:The correlation between the effective magnetic anisotropy ＜k＞ and the temperature T,＜k＞-T curve......
. The anisotropy constant of uncoupled part is the common value K1 and that of coupled part varies with the distance to the grain surface. The effective anisotropy constant between magnetically soft... high effective anisotropy constant, Keff, in composite magnetically soft-hard grains, the hard grain size should be larger than 30 nm and the soft grain size should be about 10 nm. Key words:metal......
Dependence of Effective Anisotropy on Grain Size in Nanocrystalline Nd2Fe14B Hard Magnetic Material GAO Ruwei1,FENG Weicun1,Sun Guangfei3,Zhu Minggang2,HAN Guangbing1,Li Wei2 (1.School of Physics..., the partial exchange-coupling interaction model was established and the dependence of effective anisotropy constant Keff on grain size was investigated. Calculation results reveal that the exchange......
with laser ablation and then subjected to annealing. FePt L1o grains with (001) texture and thus a large perpendicular magnetic anisotropy constant Ku of the order of 106J/m3 were formed. A thick Ag...NANO-MULTILAYERS WITH HIGH PERPENDICULAR ANISOTROPY FOR MAGNETIC RECORDING K.Kang1,T.Suzuki1,T.Yang2,B.H.Li2 (1.Information Storage Materials Laboratory, Toyota Technological Institute, Nagoya......
''s-rules 4f ion in the crystal field.The corresponding expression for the lowest-order uniaxial anisotropy constant K1 is used to discuss rare-earth substitutions,which have recently attracted...-Co magnets for high-temperature applications,and the comparison of rare-earth single-ion anisotropy with other single-ion and two-ion mechanisms. Key words:magnetic anisotropy; spin-orbit coupling......
of the multilayers is improved. The effective magnetic anisotropy of (CoCr/Pt)20 multilayers with Pt underlayer was much larger than that of CoCr/Pt bilayers. The (CoCr/Pt)20 multilayers has...Perpendicular magnetic anisotropy of Co85Cr50/Pt multilayersPol Hwang, Baohe Li, Tao Yang, Zhonghai Zhai, and Fengwu ZhuMaterials Science and Engineering School, University of Science and Technology......
diffraction(XRD). The coercivity of the Ta/Ru/Co–Pt thin films increases drastically with Ru underlayer thickness increasing, due to the enhancement of effective magneto-crystalline anisotropy constant and exchange decoupling of magnetic nano-grains. The enhancement of effective magneto-crystalline anisotropy constant is ascribed to the lattice deformation of Co–Pt layer by mismatching the Ru layer and Co......
Magnetic anisotropy in Fe-25Cr-12Co-1Si alloy induced by external magnetic field ZHEN Liang(甄 良)1, SUN Xue-yin(孙学银)1, XU Cheng-yan(徐成彦)1, 2, GAO Run-sheng(高润生)1, XU Ren-gen(徐仁根)1, QIN Lu-chang... phase are aligned along the direction of external magnetic field during isothermal magnetic ageing. Approximately 28% of the total coercivity can be attributed to the shape anisotropy of α1 phase......
of the coercivity is attributed to the uniaxial magnetic anisotropy and magnetocrystalline anisotropy of cobalt-ferrite itself. Key words: magnetite; cobalt; magnetic property CLC number: TQ586.1... composition and lattice constant of the particles were characterized by XRD. The morphologies were observed by TEM. The magnetic properties were measured by a vibrating sample magnetometer under a magnetic......
operator of Mn ion, respectively; μB is Bohr momentum; and describe the crystalline field parameters of Dy3+; and are Stevens operators; K1t is magnetocrystalline anisotropy constant... the magnetocrystalline anisotropy energies of two magnetic subsystems or the competition among the different order magnetic anisotropy constants in the same subsystem may all give rise to the change of easy......
