Theory of the Phase Transition in the Quasi-One-Dimensional Hydrogen-Bonded Ferroelectric Crystal PbHPO_4

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概要

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• A Slater-Takagi basic model is constructed for the protonic order-disordertransition in the ferroelectric crystal PbHP0.. The essential feature of the structureof PblIP0. and its isomorphs is the existence of infinite chains of hydrogen bondswith no protonic contacts between chains. A weak long-range interaction betweenchains has been added to the basic model in order to obtain spontaneous polari-zation, and the model was fit to data for PbDP0. and PbHP0. by varying twoparameters. The agreement between the predicted value of the dielectric suscepti-bility and that derived from experimental data was better for PbDP0. than it wasbetween the corresponding values for PbHP0..

• 社団法人日本物理学会の論文
• 1978-01-15

著者

• A.v.de Carvalho

  Departamento De Fisica Icex Universidade Federal De Minas Gerais

• Carvalho A.V.de

  Departamento de Fisica,ICEx,Universidade Federal de Minas Gerais

• Salinas S.R.

  Instituto de Fisica,Universidade de Sao Paulo

関連論文

• Theory of the Phase Transition in the Quasi-One-Dimensional Hydrogen-Bonded Ferroelectric Crystal PbHPO_4

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