Structural Phase Transitions I

1. Introduction.- References.- 2. Optical Studies of Structural Phase Transitions.- 2.1 Background.- 2.2 Experimental Techniques.- 2.3 Ferroelastic Transitions.- 2.4 Nonpiezoelectric Ferroelectric: Pb5Ge3O11.- 2.5 Piezoelectric-Ferroelectric Transition in KDP and Its Isomorphs.- 2.6 Zone Boundary Phase Transitions (Antiferrodistortive).- 2.7 Zone Boundary Ferroelectrics: The Molybdates.- 2.8 Incommensurate Phase Transitions.- 2.9 Nonlinear Optical Studies of Phase Transitions.- 2.10 Renormalization Group Theory and Multicritical Phenomena.- 2.11 Concluding Remarks.- References.- 3. Investigation of Structural Phase Transformations by Inelastic Neutron Scattering.- 3.1 Inelastic Neutron Scattering.- 3.2 The Central-Peak Phenomenon.- 3.3 Molecular Crystals.- 3.4 Incommensurable Structures.- References.- Additional References with Titles.- 4. Ultrasonic Studies Near Structural Phase Transitions.- 4.1 Background Material.- 4.2 Theoretical Analysis.- 4.3 Experimental Results.- 4.4 Summary.- References.- Additional References with Titles.