Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: FORC+: A method for separating reversible from irreversible behavior
  using first order reversal curves   First Order Reversal Curves (FORCs) have been used for a number of years for
the extraction of information from magnetization measurements. The results are
most unambiguous for irreversible processes -- for a collection of Preisach
hysterons, one gets a "FORC distribution" $\rho(H_{down},H_{up})$, the number
of hysterons with given downward \& upward reversal fields. There have been
many proposals for dealing with reversible behavior, usually involving
inserting it somehow into the irreversible FORC distribution. Here we will try
to do the opposite, to separate them into another function which we will call
the (reversible) "saturation field distribution", which is identically zero for
a completely irreversible system of hysterons, while the irreversible FORC
distribution is identically zero for a reversible system. Thus in a system with
both purely reversible and purely irreversible components, such as
single-domain Stoner-Wohlfarth particles with hard or easy axis along the
field, this approach cleanly separates them. For more complicated systems, as
with conventional FORC distributions, it at least provides a "signature" making
it possible to identify microscopic models that might give a particular pair of
irreversible and reversible distributions.

18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
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The categories of this paper are: solv-int
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The categories of this paper are: cmp-lg
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The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin
1
The categories of this paper are: cs
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The categories of this paper are: mtrl-th
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The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th