Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Large exchange bias in polycrystalline MnN/CoFe bilayers at room
  temperature   We report on the new polycrystalline exchange bias system MnN/CoFe, which
shows exchange bias of up to 1800Oe at room temperature with a coercive field
around 600Oe. The room temperature values of the interfacial exchange energy
and the effective uniaxial anisotropy are estimated to be $J_\mathrm{eff} =
0.41\,\mathrm{mJ}/\mathrm{m}^2$ and $K_\mathrm{eff} =
37\,\mathrm{kJ}\,/\,\mathrm{m}^3$. The thermal stability was found to be
tunable by controlling the nitrogen content of the MnN. The maximum blocking
temperature exceeds $325^\circ$C, however the median blocking temperature in
the limit of thick MnN is $160^\circ$C. Good oxidation stability through
self-passivation was observed, enabling the use of MnN in lithographically
defined microstructures. As a proof-of-principle we demonstrate a simple GMR
stack exchange biased with MnN, which shows clear separation between parallel
and antiparallel magnetic states. These properties come along with a
surprisingly simple manufacturing process for the MnN films.

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The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: q-fin
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
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The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: mtrl-th