Electronic properties of mixed barium-oxygen clusters

被引：17

作者：

Boutou, V ^{[1
]}

Lebeault, MA ^{[1
]}

Allouche, AR ^{[1
]}

Paulig, F ^{[1
]}

Viallon, J ^{[1
]}

Bordas, C ^{[1
]}

Chevaleyre, J ^{[1
]}

机构：

[1] Univ Lyon 1, Spectrometrie Ion & Mol Lab, CNRS, UMR 5579, F-69622 Villeurbanne, France

来源：

JOURNAL OF CHEMICAL PHYSICS | 2000年 / 112卷 / 14期

关键词：

D O I：

10.1063/1.481221

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ionization potentials of BanOm clusters (2 less than or equal to n less than or equal to 13,m less than or equal to n) have been measured by one photon ionization. These measurements, combined with relative abundances observed in mass spectra recorded under low (direct ionization) and high (dissociative ionization) laser intensity, allow to derive general trends in the evolution of the structure and stability of barium-oxide clusters. Stoichiometric clusters (BaO)(n) exhibit a very fast transition toward the ionic bulk barium-oxide structure while suboxides BanOn-1 exhibit a completely different behavior. In the small size range (n < 9,m < 5), the evolution of the electronic properties does not show any regular behavior. In particular, BanO3 present very low ionization potentials while, on the opposite, the ionization potentials of BanO4 clusters are relatively high. On the other hand, beyond n greater than or equal to 9, the evolution of the electronic properties is rather smooth and a specific structural transition is observed when the oxygen/barium ratio increases. (C) 2000 American Institute of Physics. [S0021-9606(00)00513-4].

引用

页码：6228 / 6236

页数：9

共 28 条

[1] Dissociation pathways and binding energies of (LiH)(n)Li+ and (LiH)(n)Li-3(+) clusters [J].

Antoine, R ;

Dugourd, P ;

Rayane, D ;

Broyer, M .

JOURNAL OF CHEMICAL PHYSICS, 1996, 104 (01) :110-119

[2] OBSERVATION OF ELECTRONIC SHELL STRUCTURE IN LARGE CESIUM OXIDE CLUSTERS [J].

BERGMANN, T ;

MARTIN, TP .

JOURNAL OF CHEMICAL PHYSICS, 1989, 90 (06) :2848-2855

[3]

BonacicKoutecky V, 1997, Z PHYS D ATOM MOL CL, V40, P445, DOI 10.1007/s004600050248

[4] Structural transition in barium suboxide clusters [J].

Boutou, V ;

Lebeault, MA ;

Allouche, AR ;

Bordas, C ;

Paulig, F ;

Viallon, J ;

Chevaleyre, J .

PHYSICAL REVIEW LETTERS, 1998, 80 (13) :2817-2820

[5]

Boutou V, 1998, EUR PHYS J D, V2, P63, DOI 10.1007/s100530050112

[6] Ionization potentials and geometrical structure of pure and oxygenated barium clusters [J].

Boutou, V ;

LebeaultDorget, MA ;

Allouche, AR ;

Bordas, C ;

Chevaleyre, J .

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1997, 40 (1-4) :448-453

[7]

BOUTOU V, 1996, THESIS U LYON

[8] Loss of metallicity in metal rich lithium oxide clusters [J].

Brechignac, C ;

Cahuzac, P ;

de Frutos, M ;

Garnier, P .

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1997, 42 (04) :303-307

[9] THEORY OF WORK-FUNCTION OF CESIUM SUBOXIDES AND CESIUM FILMS [J].

BURT, MG ;

HEINE, V .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1978, 11 (05) :961-968

[10]

*CRC, IN PRESS HDB PHYS CH

← 1 2 3 →