Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Large Second Harmonic Kerr rotation in GaFeO3 thin films on YSZ buffered
  Silicon   Epitaxial thin films of gallium iron oxide (GaFeO3) are grown on (001)
silicon by pulsed laser deposition (PLD) using yttrium-stabilized zirconia
(YSZ) buffer layer. The crystalline template buffer layer is in-situ PLD grown
through the step of high temperature stripping of the intrinsic silicon surface
oxide. The X-ray diffraction pattern shows c-axis orientation of YSZ and b-axis
orientation of GaFeO3 on Si (100) substrate. The ferromagnetic transition
temperature (TC ~ 215 K) is in good agreement with the bulk data. The films
show a large nonlinear second harmonic Kerr rotation of ~15 degrees in the
ferromagnetic state.

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The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: math
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
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The categories of this paper are: q-bio
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The categories of this paper are: chem-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: astro-ph
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The categories of this paper are: physics
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The categories of this paper are: q-fin
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The categories of this paper are: q-alg
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The categories of this paper are: eess
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The categories of this paper are: ao-sci
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The categories of this paper are: supr-con