Visualizing the propagation of volume magnetization in bulk ferromagnetic materials by neutron grating interferometry (invited)

被引：27

作者：

Gruenzweig, C. ^{[1
]}

David, C. ^{[1
]}

Bunk, O. ^{[1
]}

Kohlbrecher, J. ^{[1
]}

Lehmann, E. ^{[1
]}

Lai, Y. W. ^{[2
]}

Schaefer, R. ^{[2
]}

Roth, S. ^{[2
]}

Lejcek, P. ^{[3
]}

Kopecek, J. ^{[3
]}

Pfeiffer, F. ^{[4
]}

机构：

[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[2] Inst Metall Mat, IFW Dresden, D-01069 Dresden, Germany

[3] AS CR, Inst Phys, Prague 18221 8, Czech Republic

[4] Tech Univ Munich, Dept Phys, D-85747 Garching, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 09期

关键词：

SOURCE SINQ; DOMAINS;

D O I：

10.1063/1.3365373

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this article we report on a neutron interferometry technique based on diffraction gratings which was used to visualize the geometry-dependent magnetization processes in bulk ferromagnetic materials. The contrast origin is based on the refraction of unpolarized neutrons at magnetic domain walls and the obtained image is termed neutron dark-field image (DFI). The magnetization process is imaged by measuring the spatially resolved domain wall density distribution of the sample. The sample under investigation was a polycrystalline steel plate where the magnetization process was imaged for different sample orientations. The DFI results of the magnetization processes were verified on the one hand by complementary neutron small angle scattering (SANS) experiments and on the other hand by finite element method (FEM) simulations. The obtained SANS and FEM results verify the same magnetization process behavior as observed in the DFI results. c 2010 American Institute of Physics. [doi: 10.1063/1.3365373]

引用

页数：6

共 22 条

[1]

[Anonymous], 1998, ANAL MICROSTRUCTURES

[2] X-RAY AND NEUTRON TOPOGRAPHICAL STUDIES OF MAGNETIC-MATERIALS [J].