Tunnelling Model for Quasi‐One‐Dimensional Hydrogen‐Bonded Crystals
- 1 September 1982
- journal article
- research article
- Published by Wiley in Physica Status Solidi (b)
- Vol. 113 (1) , 367-372
- https://doi.org/10.1002/pssb.2221130139
Abstract
Tunnelling term is included in the Hamiltonian of an anisotropic Ising model which is used to explain the thermodynamic properties of quasi‐one‐dimensional hydrogen‐bonded ferroelectric crystals. A variational approach is used to treat the strong intrachain interactions accurately, while the weak interchain interactions are accounted for in a mean‐field approximation. Also, fittings are presented of some experimental data pertaining to crystals of PbHPO4.Keywords
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