Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nanoscale Magnetic Domain Memory   Magnetic domain memory (MDM) is the ability exhibited by certain magnetic
materials to reproduce the exact same nanoscale magnetic domain pattern, even
after it has been completely erased by an external magnetic field. In this
chapter, we review the various circumstances under which this unusual
phenomenon occurs. We explain how partial MDM was first observed in rough Co/Pt
multilayers with perpendicular magnetization as a result of structural defects.
We then show how 100 % MDM was achieved, even in smooth ferromagnetic films, by
coupling Co/Pd multilayers to an antiferromagnetic IrMn template via exchange
interactions. We describe how high MDM, extending through-out nearly the
entirety of the magnetization process, is obtained when zero-field-cooling the
material below its blocking temperature where exchange couplings occur. We also
review the persistence of MDM through field cycling and while warming the
material all the way up to the blocking temperature. Additionally, we discuss
the spatial dependence of MDM, highlighting intriguing oscillatory behaviors
suggesting magnetic correlations and rotational symmetries at the nanoscopic
scales. Finally, we review the dependence of MDM on cooling conditions,
revealing how MDM can be fully controlled, turned on and off, by adjusting the
magnitude of the cooling field.

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The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
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The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph