Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anomalous training effect of perpendicular exchange bias in
  Pt/Co/Pt/IrMn multilayers   A new characteristic is observed in the training effect of perpendicular
exchange bias. For Pt/Co/Pt/IrMn multilayers with perpendicular magnetic
anisotropy, the magnetization reversal process is accompanied by pinned domain
wall motion and the asymmetry of hysteresis loop is always equal to zero during
subsequent measurements. It is interesting to find that the exchange field
decreases greatly as a function of the cycling number while the coercivity
almost does not change. It is clearly demonstrated that the training effect of
perpendicular exchange bias strongly depends on the magnetization reversal
mechanism of the ferromagnetic layer.

14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio