Dielectrics and Electrooptics
The present section describes the physical properties of dielectrics and includes the following data: 1. low-frequency properties, i.e. density and Mohs hardness, thermal conductivity, static dielectric constant, dissipation factor (loss tangent), elastic
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The present section describes the physical properties of dielectrics and includes the following data:
4.4.1 Dielectric Materials: Low-Frequency Properties ................... 4.4.1.1 General Dielectric Properties ..... 4.4.1.2 Static Dielectric Constant (Low-Frequency) ..................... 4.4.1.3 Dissipation Factor.................... 4.4.1.4 Elasticity ................................ 4.4.1.5 Piezoelectricity .......................
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4.4.2 Optical Materials: High-Frequency Properties .................. 4.4.2.1 Crystal Optics: General ............. 4.4.2.2 Photoelastic Effect................... 4.4.2.3 Electrooptic Effect ................... 4.4.2.4 Nonlinear Optical Effects ..........
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A large amount of the information in this section is taken from the compilations of low- and high-frequency properties of dielectric crystals in Landolt–Börnstein, Group III, Vols. 29 and 30, especially Vol. 30b. Since 1992–1993, the date of publication of the first of these volumes, a large amount of new data on the physical properties of dielectrics has appeared in the literature. In particular, various linear and nonlinear optical properties of new crystals in the borate family (BBO, LBO, CBO, and CLBO) and of new organic crystals (DLAP, MNMA,
4.4.4 Tables of Numerical Data for Dielectrics and Electrooptics ........... Isotropic Materials............................... Cubic, Point Group m3m (Oh ) Materials .. Cubic, Point Group 43m (Td ) Materials .... Cubic, Point Group 23 (T ) Materials ........ Hexagonal, Point Group 6m2 (D3h ) Materials............................................ Hexagonal, Point Group 6mm (C6v ) Materials............................................ Hexagonal, Point Group 6 (C6 ) Materials. Trigonal, Point Group 3m (D3d ) Materials Trigonal, Point Group 32 (D3 ) Materials ... Trigonal, Point Group 3m (C3v ) Materials. Tetragonal, Point Group 4mmm (D4h ) Materials............................................ Tetragonal, Point Group 4/m (C4h ) Materials............................................ Tetragonal, Point Group 422 (D4 ) Materials............................................ Tetragonal, Point Group 42m (D2d ) Materials............................................ Tetragonal, Point Group 4mm (C4v ) Materials............................................ Orthorhombic, Point Group mmm (D2h ) Materials............................................ Orthorhombic, Point Group 222 (D2 ) Materials............................................ Orthorhombic, Point Group mm2 (C2v ) Materials............................................ Monoclinic, Point Group 2 (C2 ) Materials .
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References .................................................. 890
etc.) have been (re)measured in recent years. This situation has encouraged us to “refresh” the knowledge about these crystals by adding new data from publications from the last decade. We have also included the most commonly used isotropic materials.
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