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http://hdl.handle.net/1942/3906
Title: | Stability of helium-filled platelets in nickel | Authors: | D'OLIESLAEGER, Marc KNUYT, Gilbert DE SCHEPPER, Luc STALS, Lambert |
Issue Date: | 1991 | Publisher: | TAYLOR & FRANCIS LTD | Source: | PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 63(6). p. 1321-1334 | Abstract: | In order to explain the observed behaviour of helium platelets, which grow and then collapse into clusters of smaller aggregates, a theoretical model is developed to describe the total energy of a platelet. The model is based partly on the results of atomistic computer simulations. The variation of the total energy gives information regarding the platelet stability and is calculated in both a numerical and an analytical way. It is shown that small platelets are stable and that, once a critical radius is attained, the platelet becomes unstable and a transformation into a group of smaller aggregates takes place. The theoretical model can also explain the fact that two-dimensional helium aggregates are observed to be more stable in b.c.c. than in f.c.c. structures. | Notes: | DOLIESLAEGER, M, LIMBURGS UNIV CENTRUM,MAT RES INST,DIV MAT PHYS,UNIV CAMPUS,B-3590 DIEPENBEEK,BELGIUM. | Document URI: | http://hdl.handle.net/1942/3906 | ISI #: | A1991FV81200010 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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