Cluster ions in the field evaporation spectra of lanthanum hexaboride measured at room and elevated temperatures
Authors: Gurin, V.; Korsukova, M.; Loginov, M.; Shrednik, V.
Source: Technical Physics Letters, Volume 27, Number 5, May 2001 , pp. 427-430(4)
Publisher: MAIK Nauka/Interperiodica
Abstract:The field evaporation of LaB6 single crystal was studied by the atom probe method at room temperature and at elevated (1145–1260 K) sample point temperatures. The field evaporation spectra of LaB6 showed a surprisingly large variety of cluster ions: ion species of the LaB n +m type (n=1–9; m=1–4) and La2B n +m type (n=1–15; m=2, 3) were observed at room temperature, and doubly charged ions of the LaB n +2 type (n=1–5) were observed in the high-temperature spectra. The physical aspects of this phenomenon are discussed.
Document Type: Research Article
Publication date: 2001-05-01