Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Breaking the thermally induced write error in heat assisted recording by
  using low and high Tc materials   Heat assisted recording is believed as a key technology in order to further
increase the areal density of magnetic recording. In the work of Richter et al.
[Richter et al. J. Appl. Phys. 111, 033909 (2012)] it is stated that storage
densities will be limited to 15 to 20 Tbit/in2 due to thermally induced write
errors. In this letter we propose a composite structure consisting of two
materials with different Curie temperatures. A hard magnetic layer is on top of
a high Tc soft magnetic layer. In this composite material the thermal write
error is negligible up to areal densities of 50 to 100 Tbit/in2. It is shown
that the effective thermal field gradient, which is reduced in this composite
structure, is not relevant for a possible increase of the transition jitter.
The transition jitter is dominated by a small distribution of the Curie
temperature. The smallest jitter is obtained for the composite structure.

28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics