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  • 1
    Electronic Resource
    Electronic Resource
    Isotropic soft magnetic properties of CoFeAlCu films with (111) orientation (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 1625-1629 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The dynamic behavior of the magnetization for (111)-oriented films with cubic crystalline structures has been studied theoretically, and the permeability for such textured films has been confirmed to be isotropic. Meanwhile, Co-rich CoFeAlCu films with high saturation magnetization (4πMs=15.8 kG) and low magnetostriction (λs=1.3×10−6), prepared by the dc sputtering method, are found to exhibit perfect fcc (111) orientation with grain size of about 400 A(ring). A fairly good isotropic magnetic softness has been attained for CoFeAlCu films with Zr underlayers even in the as-sputtered state with Hc of about 1.5 Oe in every measuring direction. After annealing in a rotating magnetic field at 380 °C for 2 h, the magnetic softness is further improved with Hc as low as 0.85 Oe, and the permeability is isotropic in the film plane and as high as 500–600. The perfect (111) orientation of the CoFeAlCu films leads to the isotropic softness, which is consistent with the theoretical prediction. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.361006
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  • 2
    Electronic Resource
    Electronic Resource
    The effect of Mn on the magnetic properties of YFe2 : The 6th joint magnetism and magnetic materials (MMM)-intermag conference (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 7043-7045 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The fully self-consistent discrete variational method within the local-spin-density framework has been employed to obtain the electronic structure and magnetic moments of the Mn-containing cubic Laves phase pseudobinary compound of YFe2. The calculated results show that the substitution of Mn atoms on Fe sites weakens the ferromagnetism of this compound. The magnetic moments on distinct atomic sites were derived from the calculation. We found that when the Fe atom has one Mn atom in its nearest neighbor sites, its magnetic moment decreases rapidly, while the Mn moment is 0.71μB, parallel to the Fe moment. Based upon our results, the various experimental data have been satisfactorily explained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.358042
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  • 3
    Electronic Resource
    Electronic Resource
    Magnetoresistance of La0.5Sr0.5MnO3 nanoparticle compact (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 5582-5584 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magnetization, resistance, and current–voltage (I–V) measurements have been performed in La0.5Sr0.5MnO3 compact prepared by pressing sol-gel nanoparticles (46 nm) at 723 K with a high pressure (4 GPa). The pressed compound orders ferromagnetically at 340 K (TC) and has a substantial drop in the thermomagnetic curve below 158 K (TDP). After undergoing a metal–to–semiconductor transition at 140 K (TMS), the compound reenters into a strong semiconducting state below 60 K, demonstrating a charge localized behavior induced by the small grain rather than the magnetic disorder which is related with the frozen spin clusters below TDP. Instead of showing a feature near TMS, the magnetoresistance (MR) ratio increases almost linearly with decreasing temperature. The large low field MR corresponding to the sharp rise of magnetization is obtained at 5 K and, evidenced as the spin polarized intergrain tunneling (SPIT) effect by the nolinear I–V curve. Although La0.5Sr0.5MnO3 has a relatively high TC, the SPIT MR decays rapidly from 17.6% (5 K, 0.3 T) to 7.6% (150 K, 0.3 T), indicating that if trying to put the low field sensitivity of SPIT MR into application at room temperature, the selected compound having a higher TC seems to be a prerequisite. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.372457
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  • 4
    Electronic Resource
    Electronic Resource
    Colossal magnetoresistance in cluster glass-like insulator La0.67Sr0.33(Mn0.8Ni0.2)O3 (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 85 (1999), S. 5399-5401 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Substitution of Ni for Mn in La0.67Sr0.33MnO3 (LSMO) lowers the Curie temperature TC from 365 K for LSMO to 194 K for La0.67Sr0.33(Mn0.8Ni0.2)O3, which exhibits a cluster glass-like state. The oxide is insulating under both zero field and 60 kOe, but application of the magnetic field induces colossal magnetoresistance (CMR) especially at low temperature. Far below TC, the compound's field dependence of resistivity has a very similar shape with that of metallic perovskite manganite at relatively high temperature when the spin fluctuation grows stronger. The results indicate that the ferromagnetic superexchange between Ni and Mn, is helpful for the overall ferromagnetic exchange components just overcoming the generic antiferromagnetic exchange components, which leads to the presence of the cluster glass-like state. The reduction of the magnetic disorder and the suppression of the spin fluctuation in Mn–O layer by the external magnetic field are suggested to explain the CMR effect in this insulating compound © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.369990
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  • 5
    Electronic Resource
    Electronic Resource
    Enhancement of magneto-optical Kerr effect in Fe/PbTe and Fe/Pb bilayer films (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 5045-5048 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magneto-optical polar Kerr rotation spectra and reflectivity spectra in the wavelength region 400–700 nm are studied for Fe/PbTe and Fe/Pb bilayer films. Large Kerr rotation enhancement with high reflectivity was observed. The experimental data of reflectivity are nearly consistent with theoretical calculation using Fresnel's equations. However, the observed Kerr rotation spectra behavior is quite different from that expected by macroscopic optical theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.349010
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  • 6
    Electronic Resource
    Electronic Resource
    Colossal magnetoresistance of spin-glass perovskite La0.67Ca0.33Mn0.9Fe0.1O3 (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 71 (1997), S. 1727-1729 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetic and magnetotransport properties of the perovskite La0.67Ca0.33Mn0.9Fe0.1O3 have been investigated, and the spin-glass behavior with a spin freezing temperature of 42 K has been well confirmed for this compound. A metal-to-insulator transition and colossal magnetoresistance have been observed near its spin freezing temperature; besides, the insulator behavior has been found to reappear at lower temperature. The formation of ferromagnetic and antiferromagnetic clusters and the competition between them with the introduction of Fe3+ ions, which do not participate in the double-exchange process, have been suggested to explain the experimental results. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.120017
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  • 7
    Electronic Resource
    Electronic Resource
    Elastic-plastic crack line fields for a growing crack in a centre cracked plate with finite dimensions (1995)
    Springer
    International journal of fracture 73 (1995), S. R27 
    Details
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00055729
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  • 8
    Electronic Resource
    Electronic Resource
    Incremental virtual work equation for geometric nonlinear analysis (1987)
    Springer
    Applied mathematics and mechanics 8 (1987), S. 413-417 
    Details
    ISSN: 1573-2754
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Mathematics , Physics
    Notes: Abstract In this paper, an incremental virtual work equation is derived. It is suitable for geometric nonlinear analysis in finite element method. The effect of truncation errors is considered in the incremental virtual work equation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02019627
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  • 9
    Electronic Resource
    Electronic Resource
    Synergistic extraction of uranium(VI) with 1-phenyl-3methyl-4-(2′-chlorobenzoyl)pyrazolone-5 and neutral extractants (1989)
    Springer
    Journal of radioanalytical and nuclear chemistry 131 (1989), S. 81-87 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The synergistic extractions of uranium(VI) from hydrochloric acid solution and sulfuric acid solution with 1-phenyl-3-methyl-4-(2′-chlorobenzoyl)-pyrazolone-5 (PMCBP) together with the neutral extractants: tributyl phosphate(TBP), di-octyl sulfoxide(DOSO) and trioctylphosphine oxide(TOPO) in chloroform have been investigated. A high synergistic extraction effect was found. The formulas of the extracted species have been shown to be UO2A2B (where A=PMCBP, B=neutral extractant). The synergistic extraction power increases as follows: PMCBP-TOPO〉PMCBP-DOSO〉PMCBP-TBP. The equilibrium constants have been calculated. Models for the extraction mechanism are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02046611
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  • 10
    Electronic Resource
    Electronic Resource
    Large deflection problem of thin orthotropic circular plate with variable thickness under uniform pressure (1990)
    Springer
    Applied mathematics and mechanics 11 (1990), S. 343-353 
    Details
    ISSN: 1573-2754
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Mathematics , Physics
    Notes: Abstract Basic equations for large deflection theory of thin orthotropic circular plate with variable thickness are derived in this paper. The modified iteration method is adopted to solve the large deflection problem of thin orthotropic circular plate with variable thickness under uniform pressure. If ɛ=0, then the solution derived from the result in this paper coincides completely with the result given by J. Nowinski (using perturbation method) for solving large deflection problem of thin orthotropic circular plate with constant thickness under uniform pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02015117
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