On the computation of the magnetic phase shift for magnetic nano-particles of arbitrary shape using a spherical projection model.
作者： E. Humphrey , M. De Graef
DOI: 10.1016/J.ULTRAMIC.2013.03.006
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摘要: The magnetic phase shift of an electron wave traveling through a magnetized object is computed by considering the to be made up collection uniformly spheres arranged on nodes cubic grid. In limit vanishing grid size, this approach becomes equivalent other numerical approaches. Update equations are derived for change when magnetization single voxel modified. Example calculations presented sphere, circular disks with infinitely sharp vortex core and smooth core, oval disk pair vortices antivortex.
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Thomas Haug, Stephan Otto, Markus Schneider, Josef Zweck, Computer simulation of Lorentz electron micrographs of thin magnetic particles. Ultramicroscopy. ,vol. 96, pp. 201- 206 ,(2003) , 10.1016/S0304-3991(03)00008-1
Y. Aharonov, D. Bohm, Significance of Electromagnetic Potentials in the Quantum Theory Physical Review. ,vol. 115, pp. 485- 491 ,(1959) , 10.1103/PHYSREV.115.485
M. Beleggia, Y. Zhu, S. Tandon, M. De Graef, Electron-optical phase shift of magnetic nanoparticles II. Polyhedral particles Philosophical Magazine. ,vol. 83, pp. 1143- 1161 ,(2003) , 10.1080/0141861031000066175
Ilke Arslan, Jenna R. Tong, Paul A. Midgley, Reducing the missing wedge: High-resolution dual axis tomography of inorganic materials. Ultramicroscopy. ,vol. 106, pp. 994- 1000 ,(2006) , 10.1016/J.ULTRAMIC.2006.05.010
Charudatta Phatak, Amanda K. Petford-Long, Marc De Graef, Three-dimensional study of the vector potential of magnetic structures. Physical Review Letters. ,vol. 104, pp. 253901- 253901 ,(2010) , 10.1103/PHYSREVLETT.104.253901
S. V. Venkatakrishnan, L. F. Drummy, M. A. Jackson, M. De Graef, J. Simmons, C. A. Bouman, A Model Based Iterative Reconstruction Algorithm For High Angle Annular Dark Field-Scanning Transmission Electron Microscope (HAADF-STEM) Tomography IEEE Transactions on Image Processing. ,vol. 22, pp. 4532- 4544 ,(2013) , 10.1109/TIP.2013.2277784
M. Mansuripur, Computation of electron diffraction patterns in Lorentz electron microscopy of thin magnetic films Journal of Applied Physics. ,vol. 69, pp. 2455- 2464 ,(1991) , 10.1063/1.347859
M. Beleggia, Y. Zhu, Electron-optical phase shift of magnetic nanoparticles I. Basic concepts Philosophical Magazine. ,vol. 83, pp. 1045- 1057 ,(2003) , 10.1080/0141861031000066166
C. Phatak, M. Tanase, A.K. Petford-Long, M. De Graef, Determination of magnetic vortex polarity from a single Lorentz Fresnel image. Ultramicroscopy. ,vol. 109, pp. 264- 267 ,(2009) , 10.1016/J.ULTRAMIC.2008.11.003
C. Phatak, M. Beleggia, M. De Graef, Vector field electron tomography of magnetic materials: theoretical development. Ultramicroscopy. ,vol. 108, pp. 503- 513 ,(2008) , 10.1016/J.ULTRAMIC.2007.08.002