Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurements of spin polarization of FeB and FeCoB nanomagnets by the
  Anomalous Hall effect   A new method to measure the spin polarization of a ferromagnetic nanomagnet
is proposed and experimentally demonstrated. A high precision, repeatability
and simplicity are the features of the proposed method. The dependency of the
spin polarization on the gate voltage and the bias current were observed.

32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th