title: Understanding magnetic structures in permanent magnets via in situ Lorentz microscopy, interferometric and non-interferometric phase-reconstructions.
abstract: We present our observations of field- and orientation-dependence of magnetic domains and their reversal nucleation at grain boundaries in polycrystalline Nd2Fe14B, using Fresnel- and Foucault-Lorentz microscopy. The local magnetization associated with the domain and domain-wall in Nd2Fe14B and in precipitated Fe particles was mapped using an interferometric holography as well as a novel non-interferometric method based on the 'transport of intensity' equation.
authors.affiliation: Materials Science Division, Brookhaven National Laboratory, Upton, NY 11973, USA. zhu@bnl.gov
authors.forename: Y
authors.initials: Y
authors.lastname: Zhu
authors.forename: V V
authors.initials: VV
authors.lastname: Volkov
authors.forename: M
authors.initials: M
authors.lastname: De Graef