Abstract
The attractive hydrogen-hydrogen interaction which causes phase transitions in metalhydrides is of elastic origin1,2. Two hydrogen atoms embedded in a metal will see each other via their respective long-range displacement fields in the lattice. As the displacement field around a dilatation center falls off as 1/r2 the range of the perturbation in the lattice is infinite and the H-H interaction depends on the shape and the size of the sample. This has clearly been put in evidence by Zabel and Peis13. These authors showed that the spatial distribution of the segregated phases in cylindrically shaped Nb samples depended crucially on the ratio of the length to the radius of the samples.
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B.M. Geerken, R. Griessen, L.M. Huisman and E. Walker, to be published.
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© 1983 Plenum Press, New York
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Bakker, H.L.M., de Bruin-Hordijk, G.J., Feenstra, R., Griessen, R., de Groot, D.G., Rector, J. (1983). Hydrogen Absorption and Critical Point Lowering in Thin PdHx Films. In: Jena, P., Satterthwaite, C.B. (eds) Electronic Structure and Properties of Hydrogen in Metals. NATO Conference Series, vol 6. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-7630-9_93
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DOI: https://doi.org/10.1007/978-1-4684-7630-9_93
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