Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magneto-structural transitions in a frustrated magnet at high fields   Ultrasound and magnetization studies of bond-frustrated ZnCr2S4 spinel are
performed in static magnetic fields up to 18 T and in pulsed fields up to 62 T.
At temperatures below the antiferromagnetic transition at T_N1 14 K the sound
velocity as function of magnetic field reveals a sequence of steps followed by
plateaus indicating a succession of crystallographic structures with constant
stiffness. At the same time, the magnetization evolves continuously with field
up to full magnetic polarization without any plateaus in contrast to
geometrically frustrated chromium oxide spinels. The observed high-field
magneto-structural states are discussed within a H-T phase diagram taking into
account the field and temperature evolution of three coexisting spin structures
and subsequent lattice transformations induced by magnetic field.

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The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
9
The categories of this paper are: nlin
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The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
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The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph