Structural Transformation with “Negative Volume Expansion”: Chemical Bonding and Physical Behavior of TiGePt (pages 6272–6283)
S.-V. Ackerbauer, Dr. A. Senyshyn, Dr. H. Borrmann, Dr. U. Burkhardt, Dr. A. Ormeci, Dr. H. Rosner, Dr. W. Schnelle, Dr. M. Gamża, Dr. R. Gumeniuk, Dr. R. Ramlau, Dr. E. Bischoff, Prof. Dr. J. C. Schuster, Prof. Dr. F. Weitzer, Dr. A. Leithe-Jasper, Prof. Dr. L. H. Tjeng and Prof. Yu. Grin
Article first published online: 29 MAR 2012 | DOI: 10.1002/chem.201102401
Negative volume expansion: An experimental and theoretical study reveals the new ternary intermetallic compound TiGePt exhibiting two modifications: Below 885 °C it crystallizes in the cubic MgAgAs-type (LT) structure, and at elevated temperatures it appears in the TiNiSi-type (HT) structure. The LTHT transition is accompanied by a huge volume reduction of about 10 % (see figure).