Neutron scattering study of transverse magnetism

Authors

• Christian Binek, University of Nebraska-LincolnFollow
• T. Kato, Laboratorium f¨ur Angewandte Physik, Gerhard-Mercator-Universit¨at, 47048 Duisburg, Germany
• Wolfgang Kleemann, Laboratorium f¨ur Angewandte Physik, Gerhard-Mercator-Universit¨at, 47048 Duisburg, GermanyFollow
• O. Petracic, Laboratorium f¨ur Angewandte Physik, Gerhard-Mercator-Universit¨at, 47048 Duisburg, Germany
• D. Bertrand, Laboratoire de Physique des Solides, INSA, 31077 Toulouse Cedex, France
• F. Bourdarot, Institut Laue Langevin (ILL), 38042 Grenoble Cedex 9, France
• P. Burlet, Institut Laue Langevin (ILL), 38042 Grenoble Cedex 9, France
• H. Aruga Katori, The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama 351-01, Japan
• K. Katsumata, The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama 351-01, Japan
• K. Prokes, Hahn-Meitner-Institut (HMI), 14109 Berlin, Germany
• S. Welzel, Hahn-Meitner-Institut (HMI), 14109 Berlin, Germany

Document Type

Article

Date of this Version

12-6-1996

Comments

Published by EDP SCiences. Copyright 2000. Permission to use. Eur. Phys. J. B 15, 35 (2000).

Abstract

In order to clarify the nature of the additional phase transition at H₁ (T) < H_c (T) of the layered antiferromagnetic (AF) insulator FeBr₂ as found by Aruga Katori et al. (1996) we measured the intensity of different Bragg-peaks in different scattering geometries. Transverse AF ordering is observed in both AF phases, AFI and AFII. Its order parameter exhibits a peak at T₁ = T (H₁) in temperature scans and does not vanish in zero field. Possible origins of the step-like increase of the transverse ferromagnetic ordering induced by a weak in-plane field component when entering AFI below T₁ are discussed.