| Preface | p. v |
| List of Main Notation | p. ix |
| Introduction | p. 1 |
| References | p. 8 |
| Crystal Symmetry | p. 11 |
| Point and Space Groups | p. 11 |
| Reciprocal Lattice and the Wave Vectors | p. 22 |
| Elements of Diffraction Theory | p. 33 |
| References | p. 41 |
| Strongly Nonstoichiometric Compounds | p. 43 |
| Preparation Techniques and Degree of Homogeneity | p. 45 |
| Crystal Structure and the Homogeneity Interval | p. 52 |
| Structural Stability Boundaries | p. 72 |
| Ordering in Strongly Nonstoichiometric Carbides, Nitrides and Oxides | p. 79 |
| References | p. 102 |
| Short-Range Order | p. 113 |
| Short-Range Order Parameters and Two-Particle Correlations | p. 113 |
| Short-Range Order in Strongly Nonstoichiometric Compounds | p. 121 |
| NMR Studies of Short-Range Order | p. 122 |
| Diffuse Scattering of Neutrons and Electrons | p. 137 |
| Short-Range Order and Magnetic Susceptibility | p. 144 |
| Short-Range Order in Carbide Solid Solutions | p. 147 |
| Local Atomic Displacements | p. 149 |
| References | p. 172 |
| Long-Range Order | p. 179 |
| Long-Range Order Parameters | p. 179 |
| Disorder-Order Phase Transition Channel | p. 185 |
| Transition Channel and Diffraction Reflection Intensity | p. 190 |
| Distribution Functions and Diffraction for Superstructures of Strongly Nonstoichiometric Compounds | p. 195 |
| Superstructures of Type M2X | p. 195 |
| Superstructures of Type M3X2 | p. 203 |
| Superstructures of Type M4X3 | p. 213 |
| Superstructures of Type M6X5 | p. 217 |
| Superstructures of Type M8X7 | p. 227 |
| Superstructure of Ti5O5 | p. 232 |
| Kinds of Disorder-Order Phase Transitions | p. 237 |
| Intervals of Admissible Values of Long-Range Order Parameters | p. 239 |
| References | p. 243 |
| Interrelation of Short- and Long-Range Orders | p. 247 |
| Relationship between Short- and Long-Range Orders | p. 247 |
| Short-Range Order in Superstructures | p. 257 |
| References | p. 269 |
| Nonstoichiometric Nitrides at High Temperature | p. 271 |
| Evaporation of Nonstoichiometric Nitrides | p. 271 |
| Titanium Nitrides and Carbonitrides | p. 277 |
| Vanadium Nitrides and Carbonitrides | p. 284 |
| Niobium Nitrides and Carbonitrides | p. 290 |
| References | p. 296 |
| Order-Disorder Phase Transformation Theories | p. 299 |
| Thermodynamics of Phase Transformations | p. 299 |
| Phenomenological Theory of Phase Transformations | p. 303 |
| Mean Field Approximation | p. 309 |
| Cluster Methods in Ordering Theory | p. 321 |
| References | p. 330 |
| Order-Parameter Functional Method | p. 333 |
| Main Approaches of the Method | p. 334 |
| Energies of Clusters | p. 342 |
| The Choice of the Basis Cluster Figure | p. 348 |
| Probabilities of Clusters and Subfigures | p. 351 |
| Free Energy Minimum Conditions | p. 355 |
| References | p. 368 |
| Equilibrium Phase Diagrams | p. 371 |
| Computation of Disorder-Order Phase Transformations in Nonstoichiometric Compounds | p. 372 |
| Ordering of a MXy Compound in a Generalized Phase Diagram of the M-X System | p. 376 |
| Phase Diagrams of M-X Systems (M = Ti, Zr, Hf, V, Nb, Ta; = C, N) | p. 387 |
| Phase Diagrams of Pseudobinary Systems | p. 416 |
| References | p. 442 |
| Effects of Ordering on the Properties of Strongly Nonstoichiometric Compounds | p. 453 |
| The Basic Lattice Constant | p. 454 |
| X-Ray Photoelectron and Emission Spectra | p. 470 |
| Electron-Positron Annihilation | p. 478 |
| Electrokinetic Properties | p. 496 |
| Magnetic Susceptibility | p. 508 |
| Superconductivity | p. 528 |
| Heat Capacity | p. 539 |
| Superposition Model of the Heat Capacity | p. 540 |
| Heat Capacity of Nonstoichiometric Carbides at a Temperature Below 300 K | p. 546 |
| Heat Capacity of Nonstoichiometric Carbides at a Temperature Above 300 K and Near the Point of Order-Disorder Transition | p. 563 |
| Microhardness | p. 571 |
| References | p. 586 |
| Subject Index | p. 603 |
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