Magnetostructural transition in Fe5SiB2 observed with neutron diffraction

Research output: Contribution to journalArticle

Abstract

The crystal and magnetic structure of Fe5SiB2 has been studied by a combination of X-ray and neutron diffraction. Also, the magnetocrystalline anisotropy energy constant has been estimated from magnetisation measurements. High quality samples have been prepared using high temperature synthesis and subsequent heat treatment protocols. The crystal structure is tetragonal within the space group I4/mcm and the compound behaves ferromagnetically with a Curie temperature of 760 K. At 172 K a spin reorientation occurs in the compound and the magnetic moments go from aligning along the c-axis (high T) down to the ab-plane (low T). The magnetocrystalline anisotropy energy constant has been estimated to 0.3 MJ/m3 at 300 K.

Details

Authors
  • Johan Cedervall
  • Sofia Kontos
  • Thomas C. Hansen
  • Olivier Balmes
  • Francisco Javier Martinez-Casado
  • Zdenek Matej
  • Premysl Beran
  • Peter Svedlindh
  • Klas Gunnarsson
  • Martin Sahlberg
Organisations
External organisations
  • Uppsala University
  • Institut Laue Langevin
  • Nuclear Physics Institute of the Academy of Sciences, Czech Republic
Research areas and keywords

Keywords

  • Magnetism, Neutron diffraction, Permanent magnet, X-ray diffraction
Original languageEnglish
Pages (from-to)113-118
Number of pages6
JournalJournal of Solid State Chemistry
Volume235
Publication statusPublished - 2016 Mar 1
Publication categoryResearch
Peer-reviewedYes