Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermally induced error: density limit for magnetic data storage   Magnetic data storage is pervasive in the preservation of digital information
and the rapid pace of computer development requires ever more capacity.
Increasing the storage density for magnetic hard disk drives requires a reduced
bit size, previously thought to be limited by the thermal stability of the
constituent magnetic grains. The limiting storage density in magnetic recording
is investigated treating the writing of bits as a thermodynamic process. A
'thermal writability' factor is introduced and it is shown that storage
densities will be limited to 15 to 20 TBit/in^2 unless technology can move
beyond the currently available write field magnitudes.

6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph