A Neutron Diffraction Study of the Ferroelectric Transition of CsH<SUB>2</SUB>PO<SUB>4</SUB>

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  • A Neutron Diffraction Study of the Ferroelectric Transition of CsH2PO4
  • Neutron Diffraction Study of the Ferroe

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Abstract

Hydrogen atoms in ferroelectric phase of CsH2PO4 have been located from low temperature neutron diffraction experiment. Chains of hydrogen bonds extending to both the crystallographic b- and c-axes are confirmed. The hydrogen atom in a shorter O–H··O bond becomes ordered at low temperature phase with bond length O–H=1.02 A auad H··O=1.46 A. Structural change below Tc shows that the hydrogen ordering accompanies a slight rotation of PO4 tetrahedron about the one P–O bond.

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