A Linear Chain Model for Piezoelectricity in Zincblende and Wurtzite Type Crystals

概要

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A linear chain model, in which successive positive and negative ions are connected by two kinds of elastic springs with constants α and β, is proposed for explanation of piezoelectric effect. In this model the piezoelectric constant e_<33> is given by e_<33>=Ne^*a(α-β)/2(α+β), where e^* is the effective charge on an ion, a is the lattice parameter and N is the number of ion pairs per unit length or unit volume. This linear chain model is successfully checked by elastic constants, dielectric constants, spontaneous polarization and infrared absorption and reflection in the crystals with the zincblende and wurtzite structures. This also explains well the structure sensitive nature of piezoelectric effect which has been recently revealed.
社団法人応用物理学会の論文
1971-01-05