Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electron Holography study of the local magnetic switching process in
  MTJs   We present an electron holography experiment enabling the local and
quantitative study of magnetic properties in magnetic tunnel junction. The
junction was fully characterized during the switching process and each possible
magnetic configuration was highlighted with magnetic induction maps. No
magnetic coupling was found between the two layers. We plot a local hysteresis
loop that was compared with magnetometry measurement at the macroscopic scale
confirming the validity of the local method.

29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex