THE a and b lattice constants of gallium (orthorhombic, D182h—Abma) are almost identical and have often been a source of confusion, as has recently been emphasized by Yaqub and Cochran1. Diffractometer data at 4.2° K (ref. 2) (gallium of 99.9999 per cent grade) indicated a = 4.5156 Å, b = 4.4904 Å, c = 7.6328 Å, but at 297° K it appeared that a is smaller than b (in disagreement with Bradley3), and therefore that at an intermediate temperature (near 255° K) a should become equal to b.
Yaqub, M., and Cochran, J. F., Phys. Rev., 137, A, 1182 (1965).
Barrett, C. S., Advances in X-ray Analysis, 5, 33 (Pitman, 1961).
Bradley, A. J., Z. Krist., 91, A, 302 (1935).
Spooner, F. J., M.Sc. thesis (Univ. London 1964).
Wilson, C. G., and Spooner, F. J., Nature, 198, 1052 (1963).
Cochran, J. F. (personal communication).
Powell, R. W., Nature, 164, 153 (1949); 166, 1110 (1950).
About this article
Cite this article
BARRETT, C., SPOONER, F. Lattice Constants of Gallium at 297° K. Nature 207, 1382 (1965). https://doi.org/10.1038/2071382a0
Precision of Electric-Field Gradient Predictions by Density Functional Theory and Implications for the Nuclear Quadrupole Moment and Its Error Bar of the 111Cd 245 keV 5/2+ Level
The Journal of Physical Chemistry C (2016)
Geometry and diameter dependence of the electronic and physical properties of GaN nanowires from first principles
Physical Review B (2008)
Acta Materialia (2002)
Physical Review Letters (1998)