Studies of magnetism with photons
Studies of microscopic magnetism with photon beams from synchrotron sources have increased dramatically in the last 10 years. Techniques that are important are magnetic x-ray circular dichroism (MXCD) that measures the absorption at Q (the momentum transfer) = 0, and scattering techniques that measure at finite Q values. MXCD is a technique best suited to ferromagnets or ferrimagnets, whereas scattering techniques are best suited (but not limited to) antiferromagnets. In the scattering technique the discovery of resonance effects, when the energy is tuned to an absorption edge, has led to rapid advances and sensitivity. Perhaps the most demanding experiments are the latest ones on magnetic surfaces, where the amount of material giving the signal is less than 1mg. Both techniques have wide applications in f electron materials, and promise to greatly increase our knowledge of many features of the microscopic magnetism.
Bibliographic Reference: Paper presented: 21st Rare-Earth Conference, Duluth (US), July 7-12, 1996
Availability: Available from (1) as Paper EN 40008 ORA
Record Number: 199611047 / Last updated on: 1996-09-30
Original language: en
Available languages: en