Query: What are the differences observed between the Mn XMCD  hysteresis loops obtained using TEY and FY detection  modes ?
Source: 1001.2449.pdf
Relevant passages:
For FY the magnitude of the XMCD is similar  (but of opposite sign) at remanence and at high mag netic fields, whereas for TEY at remanence it is approx imately a factor of two larger than at 1000 Oe.