## Introduction to Solid State Physics |

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Page 117

THEORY OF

magnitude of the ferroelectric effects in

volume of ...

THEORY OF

**BARIUM TITANATE**We consider first the general order ofmagnitude of the ferroelectric effects in

**barium titanate**: It is observed that**barium****titanate**has at room temperature a saturation polarization of 48,000 esu. As thevolume of ...

Page 121

Plot of reciprocal of the dielectric constant of

After B. Wul, J. Phys. (U.S.S.R.) 10, 95 (1946); it is not known why Wul's Curie

point is 40° below that reported by other workers.] have, from (6.30), (7.7) 3Tc T -

T' the ...

Plot of reciprocal of the dielectric constant of

**barium titanate**vs. temperature. [After B. Wul, J. Phys. (U.S.S.R.) 10, 95 (1946); it is not known why Wul's Curie

point is 40° below that reported by other workers.] have, from (6.30), (7.7) 3Tc T -

T' the ...

Page 122

volume expansion coefficient, which is « 10-B in

coefficient of polarizability in ionic crystals is known to be of this same order of

magnitude, so that /3 may reasonably be of the order of 10-6 as suggested by the

...

volume expansion coefficient, which is « 10-B in

**barium titanate**; the temperaturecoefficient of polarizability in ionic crystals is known to be of this same order of

magnitude, so that /3 may reasonably be of the order of 10-6 as suggested by the

...

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### Contents

LATTICE ENERGY OF IONIC CRYSTALS | 29 |

ELASTIC CONSTANTS OF CRYSTALS | 43 |

LATTICE VIBRATIONS | 60 |

Copyright | |

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### Common terms and phrases

alkali alloy antiferromagnetic applied approximation atoms axes axis barium titanate boundary Brillouin zones calculated charge coefficient conduction band consider crystal structure cube cubic crystal Curie point curve Debye density diamagnetic dielectric constant diffraction dipole direction discussed dislocation displacement distribution domain effect elastic electric field entropy equation equilibrium experimental F-centers factor Fermi ferroelectric ferromagnetic free electron frequency heat capacity holes impurity interaction ionic crystals ions lattice constant lattice points London low temperatures magnetic field mean free path metals molecules motion nearest neighbor normal observed orbital parallel paramagnetic particles perovskite phonons Phys physical plane polarizability polarization positive potential Proc quantum ratio region resonance result room temperature rotation scattering Seitz shear Shockley shown in Fig simple cubic single crystal sodium chloride solids specimen spin superconducting susceptibility symmetry theory thermal tion unit cell unit volume valence values vector velocity wave functions wavelength x-ray zero