Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic properties of alpha-iron(II) phthalocyanine   We report on the magnetic properties of the supra-molecular compound iron(II)
phthalocyanine in its alpha-form. dc- and ac-susceptometry measurements and
Mossbauer experiments show that the iron atoms are strongly magnetically
coupled into ferromagnetic Ising chains with very weak antiferromagnetic
interchain coupling. The transition to 3D magnetic ordering below 10 K is
hindered by the presence of impurities or other defects, by which the
domain-wall arrangements along individual chains become gradually
blocked/frozen, leading to a disordered 3D distribution of ferromagnetic chain
segments. Below 5 K, field-cooled and zero-field-cooled magnetization
measurements show strong irreversible behavior, attributed to pinning of the
domain-walls by the randomly distributed defects in combination with the
interchain coupling. High-field magnetization experiments reveal a canted
arrangement of the moments in adjacent ferromagnetic chains.

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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
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The categories of this paper are: chem-ph
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The categories of this paper are: eess
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The categories of this paper are: hep-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: math
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The categories of this paper are: plasm-ph
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The categories of this paper are: q-alg
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The categories of this paper are: gr-qc
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga
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The categories of this paper are: econ