Experimental observation of third-order effect in magnetic small-angle neutron scattering

Konstantin L. Metlov, Kiyonori Suzuki, Dirk Honecker, and Andreas Michels
Phys. Rev. B 101, 214410 – Published 4 June 2020
PDFHTMLExport Citation

Abstract

A recent theory [Metlov and Michels, Phys. Rev. B 91, 054404 (2015)] predicts a qualitative effect in the magnetic small-angle neutron scattering (SANS) cross section of statistically isotropic disordered ferromagnetic media. The effect is due to the third-order terms in the amplitude of the inhomogeneities. Here, its existence is demonstrated both numerically via large-scale micromagnetic simulations and analyzed experimentally in a two-phase iron-based nanocomposite. The previous model is extended to an arbitrary spatial defect profile, which allows us to describe the experimental field dependence of the third-order SANS effect quantitatively.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 30 December 2019
  • Revised 16 April 2020
  • Accepted 20 May 2020

DOI:https://doi.org/10.1103/PhysRevB.101.214410

©2020 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Konstantin L. Metlov*

  • Donetsk Institute for Physics and Technology, R. Luxembourg str. 72, 83114 Donetsk, Ukraine and Institute for Numerical Mathematics RAS, 8 Gubkina str., 119991 Moscow GSP-1, Russia

Kiyonori Suzuki

  • Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia

Dirk Honecker and Andreas Michels

  • Department of Physics and Materials Science, University of Luxembourg, 162A Avenue de la Faïencerie, L-1511 Luxembourg, Grand Duchy of Luxembourg

  • *metlov@fti.dn.ua
  • andreas.michels@uni.lu

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 101, Iss. 21 — 1 June 2020

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×