Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High temperature induced B1 to B2 phase transformation in Cd doped ZnO
  nanocomposite thin films   In this paper, we report the high temperature mediated structural phase
transformation from B1 to B2 phase in solgel derived Cd0.2Zn0.8O nanocomposite
thin film for the temperature range of 700 to 900 degree centigrade. Xray
diffraction pattern provides a direct and unambiguous indication of phase
evolution with increase in annealing Temperature from 700 to 900 degree
centigrade along with coexistence of wurtzite phase throughout the whole
transformation regime. In fact, significant reduction in lattice parameters in
case of transformed B2 phase, extracted by Rietveld refinement provides a
direct indication of chemical pressure inducement inside the lattice owing to
anticipated mismatch in thermal expansion coefficient which leads to facilitate
such phase transformation. Raman spectrum for 900 degree centigrade annealed
ones, moreover, shows a distinguishable phonon mode at 866 centimeter inverse,
suggesting the formation of B2 phase at higher temperature, consistent with XRD
results. Scanning electron microscopy reveals the agglomeration of
nanocrystallites followed by distinct void formation, indicating the evolution
of chemical pressure inside the lattice. Soft Xray absorption measurement
reflects a deviation of the inflection point of the absorption edge which
implies Fermi level pinning with transforming phase.

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The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
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The categories of this paper are: chem-ph
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The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: nlin
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The categories of this paper are: quant-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: funct-an
2
The categories of this paper are: math
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The categories of this paper are: patt-sol
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The categories of this paper are: bayes-an