Magnetic studies using high angle neutron diffraction at the Bragg Institute
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Date
2012-07-25
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Saha Institue of Nuclear Physics
Abstract
High angle neutron diffraction (HAND) when carried out on a triple~axis for neutron spectrometer allows the study of magnetism in magnetically ordered thin films. Neutrons are very sensitive to the magnetic moment of the electron and may be used to unambiguously study antiferromagnetism in 3 material because of the unique magnetic Bragg reflections produced by antiferromagnetic ordering Magnetically active thin-films as thin as l0nm may be studied using HAND. Given that neutrons probe bulk material well, HAND allows for the characterisation of the entire thin film, providing a good indication of how the entire thin film structure behaves. Thus both the magnetic and structural character of the thin film can be completely determined through magnetic phase boundaries, such as through the Curie or Neel temperatures. In this paper, the triple axis spectrometer at the Bragg Institute is briefly described along with the important and fascinating work done on magnetically ordered thin films, multilayers and heterostructures, such as multilayers and bilayers of FePt3 and many other materials. Pushing the limits of the technique in order to study films as thin as l nm and less as well as allowing for small(ish) spot scanning will be described.
Description
Physical copy held by ANSTO Library at DDC: 539.758/30
Keywords
Neutron diffraction, Neutron spectrometers, Thin Films, Magnetic moments, Antiferromagnetism, Materials, Bragg reflection
Citation
Stampfl, A. (2012). Magnetic studies using high angle neutron diffraction at the Bragg Institute. Paper presented to SXNS12, 12th International Conference on Surface X-Ray and Neutron Scattering, 25-28 July 2012, Kolkata, India, (pp. 180).