High Pressure X-ray Diffraction Studies on Barium
- 9 August 1963
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 141 (3580), 534-535
- https://doi.org/10.1126/science.141.3580.534
Abstract
Simultaneous x-ray diffraction and electrical resistance measurements on barium establish, with certainty, that Bridgman's 78-kb resistance transition is identical with his 59-kb volumetransition. During this transition, the bodycentered cubic structure changes to hexagonalclose packed. Lattice parameters for the latter structure at 62 kb (volume scale) are: a = 3.90 A, c = 6.15 A, and c/a = 1.58. Compression (AV/Vo) at 62 kb is 0.359 + 0.005 compared to 0.345 previously reported by Bridgman. Below the transition, at 49 kb, compression is 0.300 +/- 0.005 compared to Bridgman's 0.288. Bridgman's 17-kb volume transition was not detected by x-ray diffraction.Keywords
This publication has 2 references indexed in Scilit:
- The Resistance of 72 Elements, Alloys and Compounds to 100,000 Kg/Cm²Proceedings of the American Academy of Arts and Sciences, 1952
- Pressure-Volume Relations for Seventeen Elements to 100,000 Kg/CmProceedings of the American Academy of Arts and Sciences, 1942